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https://issues.apache.org/jira/browse/HBASE-9486?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nicolas Liochon updated HBASE-9486:
-----------------------------------
Resolution: Fixed
Fix Version/s: 0.98.0
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
> NPE in HTable.close() with AsyncProcess
> ---------------------------------------
>
> Key: HBASE-9486
> URL: https://issues.apache.org/jira/browse/HBASE-9486
> Project: HBase
> Issue Type: Bug
> Components: Client
> Reporter: Enis Soztutar
> Assignee: Nicolas Liochon
> Priority: Critical
> Fix For: 0.98.0, 0.96.0
>
> Attachments: 9486.v1.patch
>
>
> When running
> {code}
> hbase org.apache.hadoop.hbase.test.IntegrationTestBigLinkedList --monkey
> slowDeterministic
> {code}
> One task failed with the following stack trace:
> {code}
> 2013-09-10 01:56:03,115 WARN [htable-pool1-t134]
> org.apache.hadoop.hbase.client.AsyncProcess: Attempt #35/35 failed for 3 ops
> on server02,60020,1378776046122 NOT
> resubmitting.region=IntegrationTestBigLinkedList,\xA6\x10\x9C\x85,1378776439065.766ab62aa30fa94c9014f09738698922.,
> hostname=server02,60020,1378776046122, seqNum=16146143
> 2013-09-10 01:56:03,115 WARN [htable-pool1-t119]
> org.apache.hadoop.hbase.client.AsyncProcess: Attempt #35/35 failed for 6 ops
> on server02,60020,1378775896233 NOT
> resubmitting.region=IntegrationTestBigLinkedList,\x9D\x95>\xDB\xCB\xD5\xE2\xAD\x7F\xCB\x1D\xBCN~\xF2U,1378774537592.b2534e273feecba91db43496efa1cd12.,
> hostname=server02,60020,1378775896233, seqNum=14890994
> 2013-09-10 01:56:03,655 WARN [htable-pool1-t119]
> org.apache.hadoop.hbase.client.AsyncProcess: Attempt #35/35 failed for 9 ops
> on server01,60020,1378775896233 NOT
> resubmitting.region=IntegrationTestBigLinkedList,\xB8\x0B.\x8C\x12Px\x88>\x10\xA4\x07\x9FJ\x97\xD0,1378775167749.7c0f1c17bc5f02e41e02939187304976.,
> hostname=server01,60020,1378775896233, seqNum=15863492
> 2013-09-10 01:56:03,818 WARN [main] org.apache.hadoop.mapred.YarnChild:
> Exception running child : java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.client.AsyncProcess.findDestLocation(AsyncProcess.java:289)
> at
> org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:234)
> at
> org.apache.hadoop.hbase.client.HTable.backgroundFlushCommits(HTable.java:894)
> at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1275)
> at org.apache.hadoop.hbase.client.HTable.close(HTable.java:1313)
> at
> org.apache.hadoop.hbase.test.IntegrationTestBigLinkedList$Generator$GeneratorMapper.cleanup(IntegrationTestBigLinkedList.java:352)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:148)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:339)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1477)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157)
> {code}
> Seems worth investigating.
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