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https://issues.apache.org/jira/browse/HBASE-5029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13169758#comment-13169758
]
Zhihong Yu commented on HBASE-5029:
-----------------------------------
I see the following snippet repeated several times before
SplitLogManager$TimeoutMonitor kicked in:
{code}
2011-12-14 02:48:58,764 DEBUG
[SplitLogWorker-juno.apache.org,56552,1323830916772] wal.HLogSplitter(1071):
Creating writer
path=hdfs://localhost:58644/user/jenkins/splitlog/juno.apache.org,56552,1323830916772_hdfs%3A%2F%2Flocalhost%3A58644%2Fuser%2Fjenkins%2F.logs%2Fjuno.apache.org%2C56552%2C1323830916772%2Fjuno.apache.org%252C56552%252C1323830916772.1323830919190/table/96a6d25cd549f2fcb7ee720c5467b048/recovered.edits/0000000000000000167.temp
region=96a6d25cd549f2fcb7ee720c5467b048
2011-12-14 02:48:58,768 DEBUG
[SplitLogWorker-juno.apache.org,56552,1323830916772]
wal.SequenceFileLogWriter(126): using new createWriter -- HADOOP-6840
2011-12-14 02:48:58,768 DEBUG
[SplitLogWorker-juno.apache.org,56552,1323830916772]
wal.SequenceFileLogWriter(136):
Path=hdfs://localhost:58644/user/jenkins/splitlog/juno.apache.org,56552,1323830916772_hdfs%3A%2F%2Flocalhost%3A58644%2Fuser%2Fjenkins%2F.logs%2Fjuno.apache.org%2C56552%2C1323830916772%2Fjuno.apache.org%252C56552%252C1323830916772.1323830919190/table/0559440bdae0aab2cc02a1b9d5cd72f0/recovered.edits/0000000000000000168.temp,
syncFs=true, hflush=false
{code}
Later:
{code}
2011-12-14 02:49:03,591 ERROR
[SplitLogWorker-juno.apache.org,56552,1323830916772]
regionserver.SplitLogWorker(169): unexpected error
java.lang.NullPointerException
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.closeThreads(DFSClient.java:3831)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.closeInternal(DFSClient.java:3874)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.close(DFSClient.java:3809)
at
org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:61)
at
org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:86)
at
org.apache.hadoop.io.SequenceFile$Writer.close(SequenceFile.java:1017)
at
org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter.close(SequenceFileLogWriter.java:214)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.splitLogFileToTemp(HLogSplitter.java:458)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.splitLogFileToTemp(HLogSplitter.java:351)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker$1.exec(SplitLogWorker.java:113)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker.grabTask(SplitLogWorker.java:266)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker.taskLoop(SplitLogWorker.java:197)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker.run(SplitLogWorker.java:165)
{code}
> TestDistributedLogSplitting fails on occasion
> ---------------------------------------------
>
> Key: HBASE-5029
> URL: https://issues.apache.org/jira/browse/HBASE-5029
> Project: HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: Prakash Khemani
>
> This is how it usually fails:
> https://builds.apache.org/view/G-L/view/HBase/job/HBase-0.92/lastCompletedBuild/testReport/org.apache.hadoop.hbase.master/TestDistributedLogSplitting/testWorkerAbort/
> Assigning mighty Prakash since he offered to take a looksee.
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