[jira] [Created] (PHOENIX-3098) Possible NegativeArraySizeException while scanning local indexes during regions merge

["Rajeshbabu Chintaguntla (JIRA)" <ji...@apache.org>]

Rajeshbabu Chintaguntla created PHOENIX-3098:
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             Summary: Possible NegativeArraySizeException while scanning local indexes during regions merge 
                 Key: PHOENIX-3098
                 URL: https://issues.apache.org/jira/browse/PHOENIX-3098
             Project: Phoenix
          Issue Type: Bug
            Reporter: Sergio Peleato
            Assignee: Rajeshbabu Chintaguntla
             Fix For: 4.8.0


While scanning local indexes during regions merge we might end up with NegativeArraySizeException which leads to RS down. The reason for this is some times HBase won't do real seek and considered fake keyvalues(can be scan start row) as seeked kvs. In that case we ended up with this issue when we call peek without seek. So for local indexes we need to enforce seek all the time for scanning local index reference files.
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2016-07-15 17:27:04,419 ERROR [B.fifo.QRpcServer.handler=8,queue=2,port=16020] coprocessor.CoprocessorHost: The coprocessor org.apache.hadoop.hbase.regionserver.IndexHalfStoreFileReaderGenerator threw java.lang.NegativeArraySizeException
java.lang.NegativeArraySizeException
	at org.apache.hadoop.hbase.regionserver.LocalIndexStoreFileScanner.getNewRowkeyByRegionStartKeyReplacedWithSplitKey(LocalIndexStoreFileScanner.java:242)
	at org.apache.hadoop.hbase.regionserver.LocalIndexStoreFileScanner.getChangedKey(LocalIndexStoreFileScanner.java:76)
	at org.apache.hadoop.hbase.regionserver.LocalIndexStoreFileScanner.peek(LocalIndexStoreFileScanner.java:68)
	at org.apache.hadoop.hbase.regionserver.KeyValueHeap.<init>(KeyValueHeap.java:87)
	at org.apache.hadoop.hbase.regionserver.KeyValueHeap.<init>(KeyValueHeap.java:71)
	at org.apache.hadoop.hbase.regionserver.StoreScanner.resetKVHeap(StoreScanner.java:378)
	at org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:227)
	at org.apache.hadoop.hbase.regionserver.IndexHalfStoreFileReaderGenerator$1.<init>(IndexHalfStoreFileReaderGenerator.java:259)
	at org.apache.hadoop.hbase.regionserver.IndexHalfStoreFileReaderGenerator.preStoreScannerOpen(IndexHalfStoreFileReaderGenerator.java:258)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$51.call(RegionCoprocessorHost.java:1284)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionOperation.call(RegionCoprocessorHost.java:1638)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1712)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperationWithResult(RegionCoprocessorHost.java:1677)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.preStoreScannerOpen(RegionCoprocessorHost.java:1279)
	at org.apache.hadoop.hbase.regionserver.HStore.getScanner(HStore.java:2110)
	at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.<init>(HRegion.java:5568)
	at org.apache.hadoop.hbase.regionserver.HRegion.instantiateRegionScanner(HRegion.java:2626)
	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:2612)
	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:2594)
	at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2271)
	at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32205)
	at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2127)
	at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:107)
	at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
	at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
	at java.lang.Thread.run(Thread.java:745)
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