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From "喜之郎" <251922...@qq.com>
Subject "File does not exist" error occurs when do load and query at the same time
Date Thu, 13 Sep 2018 03:47:31 GMT
hi community.
 I encounter a problem ,The problem is as follows:
I have a spark streaming app to load data to carbon, and during load, minor compaction and
merge index happens sometimes. And I have another spark application  to query carbon about
20 times per second. I found some errors happen, 
can someone give some advice? Does carbon can not support load and query at the same time?


spark :2.2.1
carbon:apache-carbondata-1.4.1-bin-spark2.2.1-hadoop2.7.2
hadoop:2.7.2


============
error logs :


java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException: File does not exist: /warehouse/spark/ae_event_cb_40e_std/productid=534/part-0-10395100000100001_batchno0-0-10295-1536803773876.carbondata
	at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:71)
	at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:61)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1828)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1799)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1712)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:587)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:365)
	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043)


	at org.apache.hadoop.ipc.Client.call(Client.java:1475)
	at org.apache.hadoop.ipc.Client.call(Client.java:1412)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
	at com.sun.proxy.$Proxy15.getBlockLocations(Unknown Source)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getBlockLocations(ClientNamenodeProtocolTranslatorPB.java:255)
	at sun.reflect.GeneratedMethodAccessor12.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
	at com.sun.proxy.$Proxy16.getBlockLocations(Unknown Source)
	at org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:1226)
	at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:1213)
	at org.apache.hadoop.hdfs.DFSClient.getBlockLocations(DFSClient.java:1271)
	at org.apache.hadoop.hdfs.DistributedFileSystem$1.doCall(DistributedFileSystem.java:221)
	at org.apache.hadoop.hdfs.DistributedFileSystem$1.doCall(DistributedFileSystem.java:217)
	at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
	at org.apache.hadoop.hdfs.DistributedFileSystem.getFileBlockLocations(DistributedFileSystem.java:228)
	at org.apache.hadoop.hdfs.DistributedFileSystem.getFileBlockLocations(DistributedFileSystem.java:209)
	at org.apache.spark.sql.execution.datasources.InMemoryFileIndex$$anonfun$org$apache$spark$sql$execution$datasources$InMemoryFileIndex$$listLeafFiles$3.apply(InMemoryFileIndex.scala:298)
	at org.apache.spark.sql.execution.datasources.InMemoryFileIndex$$anonfun$org$apache$spark$sql$execution$datasources$InMemoryFileIndex$$listLeafFiles$3.apply(InMemoryFileIndex.scala:281)

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