[jira] [Updated] (TEZ-1494) DAG hangs waiting for ShuffleManager.getNextInput()

["Rajesh Balamohan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-1494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rajesh Balamohan updated TEZ-1494:
----------------------------------
    Attachment: TEZ-1494.1.patch

[~bikassaha] - Can you please review?

> DAG hangs waiting for ShuffleManager.getNextInput()
> ---------------------------------------------------
>
>                 Key: TEZ-1494
>                 URL: https://issues.apache.org/jira/browse/TEZ-1494
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Rajesh Balamohan
>            Assignee: Rajesh Balamohan
>              Labels: performance
>         Attachments: TEZ-1494-DAG.dot, TEZ-1494.1.patch
>
>
> Attaching the DAG and the stack trace of the hung process.  
> Thread 30071: (state = BLOCKED)
>  - sun.misc.Unsafe.park(boolean, long) @bci=0 (Interpreted frame)
>  - java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=186 (Interpreted frame)
>  - java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2043 (Interpreted frame)
>  - java.util.concurrent.LinkedBlockingQueue.take() @bci=29, line=442 (Interpreted frame)
>  - org.apache.tez.runtime.library.shuffle.common.impl.ShuffleManager.getNextInput() @bci=67, line=610 (Interpreted frame)
>  - org.apache.tez.runtime.library.common.readers.UnorderedKVReader.moveToNextInput() @bci=26, line=176 (Interpreted frame)
>  - org.apache.tez.runtime.library.common.readers.UnorderedKVReader.next() @bci=30, line=117 (Interpreted frame)



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