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Posted to issues@hbase.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2018/11/06 21:05:00 UTC
[jira] [Commented] (HBASE-21200) Memstore flush doesn't finish
because of seekToPreviousRow() in memstore scanner.
[ https://issues.apache.org/jira/browse/HBASE-21200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16677298#comment-16677298 ]
Hudson commented on HBASE-21200:
--------------------------------
SUCCESS: Integrated in Jenkins build HBase-1.2-IT #1177 (See [https://builds.apache.org/job/HBase-1.2-IT/1177/])
HBASE-21347 Backport HBASE-21200 "Memstore flush doesn't finish because (elserj: rev 56ae228692d99127986408e44db77850d6a43daa)
* (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/DefaultMemStore.java
> Memstore flush doesn't finish because of seekToPreviousRow() in memstore scanner.
> ---------------------------------------------------------------------------------
>
> Key: HBASE-21200
> URL: https://issues.apache.org/jira/browse/HBASE-21200
> Project: HBase
> Issue Type: Bug
> Components: Scanners
> Reporter: dongjin2193.jeon
> Assignee: Toshihiro Suzuki
> Priority: Critical
> Fix For: 3.0.0, 2.2.0, 2.1.1, 2.0.3
>
> Attachments: HBASE-21200-UT.patch, HBASE-21200.master.001.patch, HBASE-21200.master.002.patch, RegionServerJstack.log
>
>
> The issue of delaying memstore flush still occurs after backport hbase-15871.
> Reverse scan takes a long time to seek previous row in the memstore full of deleted cells.
>
> jstack :
> "MemStoreFlusher.0" #114 prio=5 os_prio=0 tid=0x00007fa3d0729000 nid=0x486a waiting on condition [0x00007fa3b9b6b000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000000a465fe60> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
> at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
> at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
> at org.apache.hadoop.hbase.regionserver.*StoreScanner.updateReaders(StoreScanner.java:695)*
> at org.apache.hadoop.hbase.regionserver.HStore.notifyChangedReadersObservers(HStore.java:1127)
> at org.apache.hadoop.hbase.regionserver.HStore.updateStorefiles(HStore.java:1106)
> at org.apache.hadoop.hbase.regionserver.HStore.access$600(HStore.java:130)
> at org.apache.hadoop.hbase.regionserver.HStore$StoreFlusherImpl.commit(HStore.java:2455)
> at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2519)
> at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2256)
> at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2218)
> at org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:2110)
> at org.apache.hadoop.hbase.regionserver.HRegion.flush(HRegion.java:2036)
> at org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:501)
> at org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:471)
> at org.apache.hadoop.hbase.regionserver.MemStoreFlusher.access$800(MemStoreFlusher.java:75)
> at org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemStoreFlusher.java:259)
> at java.lang.Thread.run(Thread.java:748)
>
> "RpcServer.FifoWFPBQ.default.handler=27,queue=0,port=16020" #65 daemon prio=5 os_prio=0 tid=0x00007fa3e6280000 nid=0x4801 runnable [0x00007fa3bd29a000]
> java.lang.Thread.State: RUNNABLE
> at org.apache.hadoop.hbase.regionserver.DefaultMemStore$MemStoreScanner.getNext(DefaultMemStore.java:780)
> at org.apache.hadoop.hbase.regionserver.DefaultMemStore$MemStoreScanner.seekInSubLists(DefaultMemStore.java:826)
> - locked <0x00000000b45aa5b8> (a org.apache.hadoop.hbase.regionserver.DefaultMemStore$MemStoreScanner)
> at org.apache.hadoop.hbase.regionserver.DefaultMemStore$MemStoreScanner.seek(DefaultMemStore.java:818)
> - locked <0x00000000b45aa5b8> (a org.apache.hadoop.hbase.regionserver.DefaultMemStore$MemStoreScanner)
> at org.apache.hadoop.hbase.regionserver.DefaultMemStore$MemStoreScanner.seekToPreviousRow(DefaultMemStore.java:1000)
> - locked <0x00000000b45aa5b8> (a org.apache.hadoop.hbase.regionserver.DefaultMemStore$MemStoreScanner)
> at org.apache.hadoop.hbase.regionserver.ReversedKeyValueHeap.next(ReversedKeyValueHeap.java:136)
> at org.apache.hadoop.hbase.regionserver.*StoreScanner.next(StoreScanner.java:629)*
> at org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:147)
> at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.populateResult(HRegion.java:5876)
> at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextInternal(HRegion.java:6027)
> at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextRaw(HRegion.java:5814)
> at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2552)
> - locked <0x000000009ee8ca10> (a org.apache.hadoop.hbase.regionserver.ReversedRegionScannerImpl)
> at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32385)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2150)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:112)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:187)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:167)
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