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https://issues.apache.org/jira/browse/PIG-4418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14499234#comment-14499234
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Daniel Dai commented on PIG-4418:
---------------------------------
It should be good to prevent in general but in the mean time, can we add more
logging and prominent warning message so if that happens again, we will know it
and do some good analysis?
> NullPointerException in JVMReuseImpl
> ------------------------------------
>
> Key: PIG-4418
> URL: https://issues.apache.org/jira/browse/PIG-4418
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.14.0
> Reporter: Jeff Zhang
> Assignee: Rohini Palaniswamy
> Fix For: 0.15.0
>
> Attachments: PIG-4418-1.patch
>
>
> {code}
> 2015-02-13 15:17:11,067 INFO [TezChild] task.TezTaskRunner: Encounted an
> error while executing task: attempt_1423730493153_0019_1_04_000002_0
> java.lang.NullPointerException
> at org.apache.pig.JVMReuseImpl.cleanupStaticData(JVMReuseImpl.java:46)
> at
> org.apache.pig.backend.hadoop.executionengine.tez.runtime.PigProcessor.close(PigProcessor.java:175)
> at
> org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.close(LogicalIOProcessorRuntimeTask.java:338)
> at
> org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:181)
> at
> org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:171)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
> at
> org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.call(TezTaskRunner.java:171)
> at
> org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.call(TezTaskRunner.java:166)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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