fengxianjing created HBASE-27034:
------------------------------------
Summary: NegativeArraySizeException was encountered during
compaction
Key: HBASE-27034
URL: https://issues.apache.org/jira/browse/HBASE-27034
Project: HBase
Issue Type: Bug
Components: HFile
Affects Versions: 2.3.4
Reporter: fengxianjing
Assignee: fengxianjing
{code:java}
2022-04-13 12:45:37,122 ERROR [regionserver/xxxxxx:26020-shortCompactions-0]
regionserver.CompactSplit: Compaction failed
region=XXX:XXX,002CX21205070934507532021052320210523174923,162
8091302516.7d2e05ad63b91843d438d2464a908d49.,
storeName=7d2e05ad63b91843d438d2464a908d49/info, priority=90,
startTime=1649825135950
java.lang.NegativeArraySizeException
at org.apache.hadoop.hbase.CellUtil.cloneQualifier(CellUtil.java:120)
at
org.apache.hadoop.hbase.ByteBufferKeyValue.getQualifierArray(ByteBufferKeyValue.java:112)
at
org.apache.hadoop.hbase.CellUtil.getCellKeyAsString(CellUtil.java:1335)
at
org.apache.hadoop.hbase.CellUtil.getCellKeyAsString(CellUtil.java:1318)
at
org.apache.hadoop.hbase.io.hfile.HFileWriterImpl.getMidpoint(HFileWriterImpl.java:384)
at
org.apache.hadoop.hbase.io.hfile.HFileWriterImpl.finishBlock(HFileWriterImpl.java:349)
at
org.apache.hadoop.hbase.io.hfile.HFileWriterImpl.checkBlockBoundary(HFileWriterImpl.java:328)
at
org.apache.hadoop.hbase.io.hfile.HFileWriterImpl.append(HFileWriterImpl.java:739)
at
org.apache.hadoop.hbase.regionserver.StoreFileWriter.append(StoreFileWriter.java:299)
at
org.apache.hadoop.hbase.regionserver.compactions.Compactor.performCompaction(Compactor.java:410)
at
org.apache.hadoop.hbase.regionserver.compactions.Compactor.compact(Compactor.java:333)
at
org.apache.hadoop.hbase.regionserver.compactions.DefaultCompactor.compact(DefaultCompactor.java:65)
at
org.apache.hadoop.hbase.regionserver.DefaultStoreEngine$DefaultCompactionContext.compact(DefaultStoreEngine.java:126)
at org.apache.hadoop.hbase.regionserver.HStore.compact(HStore.java:1544)
at
org.apache.hadoop.hbase.regionserver.HRegion.compact(HRegion.java:2288)
at
org.apache.hadoop.hbase.regionserver.CompactSplit$CompactionRunner.doCompaction(CompactSplit.java:619)
at
org.apache.hadoop.hbase.regionserver.CompactSplit$CompactionRunner.run(CompactSplit.java:661)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748) {code}
We encounter the exeception above many times. Usually, it will retry and
compact success next time. But sometime it make _getMidpoint return_ a wrong
result and then make an abnormal index block as follow
{code:java}
068c892d122//LATEST_TIMESTAMP/Maximum/vlen=0/seqid=0
1//LATEST_TIMESTAMP/Maximum/vlen=0/seqid=0
068c896a6fc6f155beaddab036a4225ef79_12022011420220114205945/info:q/LATEST_TIMESTAMP/Maximum/vlen=0/seqid=0
{code}
And this index block will lead to an endless loop in
_org.apache.hadoop.hbase.regionserver.KeyValueHeap#generalizedSeek_
The cause of this problem is _lastCellOfPreviousBlock_ reference to the cells
in read path([HBASE-16372|https://issues.apache.org/jira/browse/HBASE-16372])
I have fixed it and will create a PR for it
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