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From William Shen <wills...@marinsoftware.com>
Subject Re: HBase Get Encounters java.lang.IndexOutOfBoundsException
Date Wed, 05 Dec 2018 23:24:49 GMT
In addition, when running hbase hfile -f -p, kv pairs were printed until
the program hit the following exception:

Exception in thread "main" java.lang.RuntimeException: Unknown code 65

at org.apache.hadoop.hbase.KeyValue$Type.codeToType(KeyValue.java:259)

at org.apache.hadoop.hbase.KeyValue.keyToString(KeyValue.java:1246)

at
org.apache.hadoop.hbase.io.encoding.BufferedDataBlockEncoder$ClonedSeekerState.toString(BufferedDataBlockEncoder.java:506)

at java.lang.String.valueOf(String.java:2994)

at java.lang.StringBuilder.append(StringBuilder.java:131)

at
org.apache.hadoop.hbase.io.hfile.HFilePrettyPrinter.scanKeysValues(HFilePrettyPrinter.java:382)

at
org.apache.hadoop.hbase.io.hfile.HFilePrettyPrinter.processFile(HFilePrettyPrinter.java:316)

at
org.apache.hadoop.hbase.io.hfile.HFilePrettyPrinter.run(HFilePrettyPrinter.java:255)

at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)

at
org.apache.hadoop.hbase.io.hfile.HFilePrettyPrinter.main(HFilePrettyPrinter.java:677)

On Wed, Dec 5, 2018 at 2:24 PM William Shen <willshen@marinsoftware.com>
wrote:

> Thank you Stack.
> I was able to isolate the specific Hfile causing the exception. Do you
> mind teaching me how to play with the file standalone? I am not sure if I
> know how to do that.
> Thanks!
>
> On Wed, Dec 5, 2018 at 1:04 PM Stack <stack@duboce.net> wrote:
>
>> Looks like bug in FastDiffDeltaEncoder triggered by whatever the current
>> form of the target file. Can you figure which file it is (going by the Get
>> coordinates?). I suppose the compactor is running into the same problem
>> (was thinking a major compaction might get you over this hump). You could
>> make a copy of the problematic file and play with it standalone to see if
>> can figure the bug. Failing that, post to a JIRA if you yourself can't
>> figure it so someone else might have a go at it?
>>
>> Thanks,
>> S
>>
>> On Wed, Dec 5, 2018 at 11:22 AM William Shen <willshen@marinsoftware.com>
>> wrote:
>>
>> > Hi there,
>> >
>> > We've recently encountered issue retrieving data from our HBase cluster,
>> > and have not had much luck troubleshooting the issue. We narrowed down
>> our
>> > issue to a single GET, which appears to be caused by
>> > FastDiffDeltaEncoder.java running into
>> java.lang.IndexOutOfBoundsException.
>> > Has anyone encountered similar issues before, or does anyone have
>> > experience troubleshooting issues such as this one? Any help would be
>> much
>> > appreciated! We are running 1.2.0-cdh5.9.2, and the GET in question is:
>> >
>> > hbase(main):004:0> get 'qa2.ADGROUPS',
>> >
>> >
>> "\x05\x80\x00\x00\x00\x00\x1F\x54\x9C\x80\x00\x00\x00\x00\x1C\x7D\x45\x00\x04\x80\x00\x00\x00\x00\x1D\x0F\x19\x80\x00\x00\x00\x00\x4A\x64\x6F\x80\x00\x00\x00\x01\xD9\xDB\xCE"
>> >
>> > COLUMN                                                CELL
>> >
>> >
>> >
>> >
>> > ERROR: java.io.IOException
>> >
>> > at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2215)
>> >
>> > at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:109)
>> >
>> > at
>> >
>> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:185)
>> >
>> > at
>> >
>> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:165)
>> >
>> > Caused by: java.lang.IndexOutOfBoundsException
>> >
>> > at java.nio.Buffer.checkBounds(Buffer.java:567)
>> >
>> > at java.nio.HeapByteBuffer.get(HeapByteBuffer.java:149)
>> >
>> > at
>> > org.apache.hadoop.hbase.io
>> > .encoding.FastDiffDeltaEncoder$1.decode(FastDiffDeltaEncoder.java:465)
>> >
>> > at
>> > org.apache.hadoop.hbase.io
>> >
>> .encoding.FastDiffDeltaEncoder$1.decodeNext(FastDiffDeltaEncoder.java:516)
>> >
>> > at
>> > org.apache.hadoop.hbase.io
>> >
>> .encoding.BufferedDataBlockEncoder$BufferedEncodedSeeker.next(BufferedDataBlockEncoder.java:618)
>> >
>> > at
>> > org.apache.hadoop.hbase.io
>> > .hfile.HFileReaderV2$EncodedScannerV2.next(HFileReaderV2.java:1277)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.StoreFileScanner.next(StoreFileScanner.java:180)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:108)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:588)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:147)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.populateResult(HRegion.java:5706)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextInternal(HRegion.java:5865)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextRaw(HRegion.java:5643)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.next(HRegion.java:5620)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.next(HRegion.java:5606)
>> >
>> > at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:6801)
>> >
>> > at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:6779)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.regionserver.RSRpcServices.get(RSRpcServices.java:2029)
>> >
>> > at
>> >
>> >
>> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:33644)
>> >
>> > at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2170)
>> >
>> > ... 3 more
>> >
>> >
>> > Thank you very much in advance!
>> >
>>
>

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