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From "Heng Chen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-14178) regionserver blocks because of waiting for offsetLock
Date Sun, 02 Aug 2015 07:52:04 GMT
Heng Chen created HBASE-14178:
---------------------------------

             Summary: regionserver blocks because of waiting for offsetLock
                 Key: HBASE-14178
                 URL: https://issues.apache.org/jira/browse/HBASE-14178
             Project: HBase
          Issue Type: Bug
            Reporter: Heng Chen
            Priority: Critical


My regionserver blocks, and all client rpc timeout.

I print the regionserver's jstack,  it seems a lot of thread was blocked for waiting offsetLock,
detail infomation belows:

{code}
"B.DefaultRpcServer.handler=2,queue=2,port=60020" #82 daemon prio=5 os_prio=0 tid=0x0000000001827000
nid=0x2cdc in Object.wait() [0x00007f3831b72000]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:502)
        at org.apache.hadoop.hbase.util.IdLock.getLockEntry(IdLock.java:79)
        - locked <0x0000000773af7c18> (a org.apache.hadoop.hbase.util.IdLock$Entry)
        at org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock(HFileReaderV2.java:352)
        at org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$BlockIndexReader.loadDataBlockWithScanInfo(HFileBlockIndex.java:253)
        at org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:524)
        at org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.reseekTo(HFileReaderV2.java:572)
        at org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseekAtOrAfter(StoreFileScanner.java:257)
        at org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseek(StoreFileScanner.java:173)
        at org.apache.hadoop.hbase.regionserver.NonLazyKeyValueScanner.doRealSeek(NonLazyKeyValueScanner.java:55)
        at org.apache.hadoop.hbase.regionserver.KeyValueHeap.generalizedSeek(KeyValueHeap.java:313)
        at org.apache.hadoop.hbase.regionserver.KeyValueHeap.requestSeek(KeyValueHeap.java:269)
        at org.apache.hadoop.hbase.regionserver.StoreScanner.reseek(StoreScanner.java:695)
        at org.apache.hadoop.hbase.regionserver.StoreScanner.seekAsDirection(StoreScanner.java:683)
        at org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:533)
        at org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:140)
        at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.populateResult(HRegion.java:3889)
        at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextInternal(HRegion.java:3969)
        at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextRaw(HRegion.java:3847)
        at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.next(HRegion.java:3820)
        - locked <0x00000005e5c55ad0> (a org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl)
        at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.next(HRegion.java:3807)
        at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:4779)
        at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:4753)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:2916)
        at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29583)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2027)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:108)
        at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:114)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:94)
        at java.lang.Thread.run(Thread.java:745)

   Locked ownable synchronizers:
        - <0x00000005e5c55c08> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
{code}





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