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https://issues.apache.org/jira/browse/HIVE-10737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14548298#comment-14548298
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Gopal V commented on HIVE-10737:
--------------------------------
Logs suggest that this happens during Uberized Fetcher thread creation - still
no conclusive evidence of that.
> LLAP: task scheduler thread-count keeps growing
> -----------------------------------------------
>
> Key: HIVE-10737
> URL: https://issues.apache.org/jira/browse/HIVE-10737
> Project: Hive
> Issue Type: Sub-task
> Reporter: Gopal V
> Assignee: Siddharth Seth
>
> LLAP AppMasters die with
> {code}
> 2015-05-17 20:22:44,513 FATAL [Thread-97] yarn.YarnUncaughtExceptionHandler:
> Thread Thread[Thread-97,5,main] threw an Error. Shutting down now...
> java.lang.OutOfMemoryError: unable to create new native thread
> at java.lang.Thread.start0(Native Method)
> at java.lang.Thread.start(Thread.java:714)
> at
> java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:950)
> at
> java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1357)
> at
> java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
> at
> java.util.concurrent.Executors$DelegatedExecutorService.submit(Executors.java:681)
> at
> org.apache.tez.dag.app.rm.TaskSchedulerAppCallbackWrapper.taskAllocated(TaskSchedulerAppCallbackWrapper.java:60)
> at
> org.apache.tez.dag.app.rm.LocalTaskSchedulerService$AsyncDelegateRequestHandler.allocateTask(LocalTaskSchedulerService.java:410)
> at
> org.apache.tez.dag.app.rm.LocalTaskSchedulerService$AsyncDelegateRequestHandler.processRequest(LocalTaskSchedulerService.java:394)
> at
> org.apache.tez.dag.app.rm.LocalTaskSchedulerService$AsyncDelegateRequestHandler.run(LocalTaskSchedulerService.java:386)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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