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 <st...@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 <wills...@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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