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Siddharth Seth commented on TEZ-1661: ------------------------------------- [~zjffdu] - the patch is required, however I don't think this thread blocks JVM shutdown since it's a daemon. Is there a way to reproduce this ? > LocalTaskScheduler hangs when shutdown > -------------------------------------- > > Key: TEZ-1661 > URL: https://issues.apache.org/jira/browse/TEZ-1661 > Project: Apache Tez > Issue Type: Bug > Affects Versions: 0.5.0 > Environment: Local Mode > Reporter: Oleg Zhurakousky > Assignee: Jeff Zhang > Attachments: TEZ-1661-1.patch > > > LocalTaskScheduler hangs on 'take' from the 'taskRequestQueue ' when > TezClient shuts down (e.g., TezClient.stop). > Below is jstack output observed when running in Tez local mode: > {code} > "Thread-53" prio=5 tid=0x00007fc876d8f800 nid=0xac07 runnable > [0x000000011df90000] > java.lang.Thread.State: RUNNABLE > at java.lang.Throwable.fillInStackTrace(Native Method) > at java.lang.Throwable.fillInStackTrace(Throwable.java:783) > - locked <0x00000007b6ce60a0> (a java.lang.InterruptedException) > at java.lang.Throwable.<init>(Throwable.java:250) > at java.lang.Exception.<init>(Exception.java:54) > at java.lang.InterruptedException.<init>(InterruptedException.java:57) > at > java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireInterruptibly(AbstractQueuedSynchronizer.java:1219) > at > java.util.concurrent.locks.ReentrantLock.lockInterruptibly(ReentrantLock.java:340) > at > java.util.concurrent.PriorityBlockingQueue.take(PriorityBlockingQueue.java:535) > at > org.apache.tez.dag.app.rm.LocalTaskSchedulerService$AsyncDelegateRequestHandler.processRequest(LocalTaskSchedulerService.java:310) > at > org.apache.tez.dag.app.rm.LocalTaskSchedulerService$AsyncDelegateRequestHandler.run(LocalTaskSchedulerService.java:304) > at java.lang.Thread.run(Thread.java:745) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)