[PHOENIX-3098] Possible NegativeArraySizeException while scanning local indexes during regions merge

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.8.0
• Assignee: Rajeshbabu Chintaguntla
• Reporter: Sergio Peleato
• Created: 19/Jul/16 07:20
• Updated: 11/Aug/16 08:29
• Resolved: 25/Jul/16 12:34

Description

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.

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)

Thanks speleato for finding this issue. Added you as reporter for this issue.