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From William Shen <wills...@marinsoftware.com>
Subject Re: HBase Get Encounters java.lang.IndexOutOfBoundsException
Date Thu, 06 Dec 2018 20:07:46 GMT
I have created https://issues.apache.org/jira/browse/HBASE-21563 in case
anyone else is able to give a try at reading the HFile. Thank you!

On Wed, Dec 5, 2018 at 3:24 PM William Shen <willshen@marinsoftware.com>
wrote:

> 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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