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From Apache Jenkins Server <jenk...@builds.apache.org>
Subject Apache Hadoop qbt Report: trunk+JDK11 on Linux/x86_64
Date Fri, 02 Oct 2020 03:46:26 GMT
For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/

[Sep 30, 2020 9:22:55 PM] (noreply) HADOOP-17287. Support new Instance by non default constructor by ReflectionUtils (#2341)




-1 overall


The following subsystems voted -1:
    asflicense findbugs mvnsite pathlen shadedclient unit xml


The following subsystems voted -1 but
were configured to be filtered/ignored:
    cc checkstyle javac javadoc pylint shellcheck shelldocs whitespace


The following subsystems are considered long running:
(runtime bigger than 1h  0m  0s)
    unit whitespace


Specific tests:

    XML :

       Parsing Error(s): 
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-excerpt.xml 
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags.xml 
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags2.xml 
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-sample-output.xml 
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/fair-scheduler-invalid.xml 
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/yarn-site-with-invalid-allocation-file-ref.xml 

    findbugs :

       module:hadoop-common-project/hadoop-common 
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457] 
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368] 
       Nullcheck of scope at line 3441 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3441 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3441] 
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828] 
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763] 
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691] 
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797] 
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725] 
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663] 
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376] 
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106] 
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65] 
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430] 
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389] 
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79] 
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213] 
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248] 
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204] 

    findbugs :

       module:hadoop-common-project 
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457] 
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368] 
       Nullcheck of scope at line 3441 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3441 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3441] 
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828] 
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763] 
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691] 
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797] 
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725] 
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663] 
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376] 
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106] 
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65] 
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430] 
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389] 
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79] 
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213] 
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248] 
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204] 

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs-client 
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236] 

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs 
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302] 
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138] 
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621] 
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623] 
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178] 
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695] 
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601] 
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214] 
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212] 
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243] 
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131] 
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162] 

    findbugs :

       module:hadoop-hdfs-project 
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302] 
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138] 
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621] 
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623] 
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178] 
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695] 
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601] 
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214] 
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212] 
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243] 
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131] 
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162] 
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn 
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536] 
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519] 
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509] 
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512] 
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500] 
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503] 
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439] 
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510] 
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103] 
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371] 
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380] 
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341] 
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291] 
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309] 
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356] 
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307] 
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433] 
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464] 
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96] 
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94] 
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596] 
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637] 
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655] 
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746] 
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622] 
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268] 
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258] 
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131] 
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503] 
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733] 
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742] 
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429] 
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737] 
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607] 
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645] 
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646] 
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294] 
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333] 
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75] 
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95] 
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401] 
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common 
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536] 
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519] 
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509] 
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512] 
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500] 
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server 
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439] 
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510] 
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103] 
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371] 
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380] 
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341] 
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291] 
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309] 
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356] 
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307] 
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433] 
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464] 
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96] 
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94] 
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596] 
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637] 
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655] 
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746] 
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622] 
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268] 
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258] 
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131] 
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503] 
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733] 
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742] 
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429] 
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737] 
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607] 
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645] 
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646] 
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294] 
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333] 
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75] 
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager 
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439] 
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510] 
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103] 
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371] 
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380] 
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341] 
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291] 
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309] 
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356] 
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307] 
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433] 
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464] 
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96] 
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice 
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131] 
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503] 
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733] 
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742] 
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429] 
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737] 
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607] 
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645] 
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646] 
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager 
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596] 
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637] 
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655] 
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746] 
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622] 
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268] 
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase 
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333] 
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75] 
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-client 
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333] 
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75] 
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications 
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401] 
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services 
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401] 
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123] 

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core 
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401] 
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123] 

    findbugs :

       module:hadoop-yarn-project 
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536] 
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519] 
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509] 
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512] 
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500] 
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503] 
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439] 
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510] 
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103] 
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371] 
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380] 
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341] 
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291] 
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309] 
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356] 
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307] 
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433] 
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464] 
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96] 
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94] 
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596] 
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637] 
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655] 
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746] 
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622] 
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268] 
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258] 
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131] 
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503] 
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733] 
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742] 
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429] 
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737] 
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607] 
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645] 
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646] 
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294] 
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333] 
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75] 
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95] 
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401] 
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123] 

    findbugs :

       module:hadoop-tools/hadoop-dynamometer/hadoop-dynamometer-infra 
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152] 

    findbugs :

       module:hadoop-tools/hadoop-dynamometer 
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152] 

    findbugs :

       module:hadoop-tools/hadoop-openstack 
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70] 
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52] 
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70] 

    findbugs :

       module:hadoop-tools/hadoop-aws 
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304] 

    findbugs :

       module:hadoop-tools/hadoop-azure 
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469] 
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436] 
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469] 
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443] 

    findbugs :

       module:hadoop-tools/hadoop-fs2img 
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328] 

    findbugs :

       module:hadoop-tools 
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469] 
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436] 
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469] 
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443] 
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304] 
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70] 
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52] 
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70] 
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328] 
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152] 

    findbugs :

       module:root 
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457] 
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368] 
       Nullcheck of scope at line 3441 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3441 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3441] 
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828] 
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763] 
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691] 
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797] 
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725] 
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663] 
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376] 
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469] 
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436] 
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469] 
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443] 
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304] 
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106] 
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70] 
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52] 
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70] 
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65] 
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302] 
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138] 
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621] 
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623] 
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178] 
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695] 
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601] 
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214] 
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212] 
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243] 
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131] 
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162] 
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328] 
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236] 
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430] 
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389] 
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152] 
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79] 
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213] 
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248] 
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204] 
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536] 
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519] 
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509] 
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512] 
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500] 
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503] 
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439] 
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510] 
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103] 
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371] 
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380] 
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341] 
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291] 
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309] 
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343] 
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356] 
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307] 
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433] 
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464] 
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96] 
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94] 
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596] 
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637] 
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655] 
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746] 
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622] 
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268] 
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258] 
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131] 
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503] 
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733] 
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742] 
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429] 
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737] 
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607] 
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645] 
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646] 
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294] 
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333] 
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75] 
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95] 
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401] 
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123] 

    Failed junit tests :

       hadoop.crypto.key.kms.server.TestKMS 
       hadoop.hdfs.TestFileChecksum 
       hadoop.hdfs.TestFileChecksumCompositeCrc 
       hadoop.hdfs.TestGetFileChecksum 
       hadoop.hdfs.server.sps.TestExternalStoragePolicySatisfier 
       hadoop.hdfs.server.namenode.TestAddOverReplicatedStripedBlocks 
       hadoop.hdfs.server.datanode.TestDirectoryScanner 
       hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFSStriped 
       hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks 
       hadoop.hdfs.TestSafeModeWithStripedFileWithRandomECPolicy 
       hadoop.fs.contract.router.TestRouterHDFSContractMkdir 
       hadoop.hdfs.server.federation.router.TestRouter 
       hadoop.fs.contract.router.TestRouterHDFSContractGetFileStatus 
       hadoop.fs.contract.router.TestRouterHDFSContractRootDirectory 
       hadoop.hdfs.server.federation.router.TestRouterAllResolver 
       hadoop.fs.contract.router.TestRouterHDFSContractAppendSecure 
       hadoop.fs.contract.router.TestRouterHDFSContractConcatSecure 
       hadoop.fs.contract.router.TestRouterHDFSContractMkdirSecure 
       hadoop.fs.contract.router.TestRouterHDFSContractOpenSecure 
       hadoop.fs.contract.router.TestRouterHDFSContractCreateSecure 
       hadoop.fs.contract.router.TestRouterHDFSContractConcat 
       hadoop.fs.contract.router.TestRouterHDFSContractCreate 
       hadoop.fs.contract.router.TestRouterHDFSContractGetFileStatusSecure 
       hadoop.fs.contract.router.TestRouterHDFSContractOpen 
       hadoop.fs.contract.router.TestRouterHDFSContractRenameSecure 
       hadoop.hdfs.server.federation.router.TestSafeMode 
       hadoop.hdfs.server.federation.router.TestRouterQuota 
       hadoop.fs.contract.router.TestRouterHDFSContractSeekSecure 
       hadoop.hdfs.server.federation.router.TestRouterClientRejectOverload 
       hadoop.yarn.server.nodemanager.nodelabels.TestConfigurationNodeAttributesProvider 
       hadoop.yarn.server.timelineservice.security.TestTimelineAuthFilterForV2 
       hadoop.yarn.client.api.impl.TestAHSClient 
       hadoop.yarn.client.TestRMFailoverProxyProvider 
       hadoop.yarn.server.timelineservice.reader.TestTimelineReaderWebServicesHBaseStorage 
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineReaderImpl 
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreCollectionCreator 
       hadoop.yarn.server.timelineservice.documentstore.writer.cosmosdb.TestCosmosDBDocumentStoreWriter 
       hadoop.yarn.server.timelineservice.documentstore.reader.cosmosdb.TestCosmosDBDocumentStoreReader 
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineWriterImpl 
       hadoop.yarn.applications.distributedshell.TestDistributedShell 
       hadoop.mapreduce.v2.TestMRJobsWithProfiler 
      

   cc:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/diff-compile-cc-root.txt [48K]

   javac:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/diff-compile-javac-root.txt [600K]

   checkstyle:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/diff-checkstyle-root.txt [16M]

   mvnsite:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/patch-mvnsite-root.txt [368K]

   pathlen:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/pathlen.txt [12K]

   pylint:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/diff-patch-pylint.txt [60K]

   shellcheck:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/diff-patch-shellcheck.txt [20K]

   shelldocs:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/diff-patch-shelldocs.txt [96K]

   whitespace:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/whitespace-eol.txt [13M]
      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/whitespace-tabs.txt [1.9M]

   xml:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/xml.txt [24K]

   shadedclient:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/patch-shadedclient.txt [212K]

   javadoc:

      https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/16/artifact/out/diff-javadoc-javadoc-root.txt [4.0K]

   findbugs:

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   asflicense:

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