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From "xupeng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11192) OOM during Quota Initialization lead to Namenode hang
Date Tue, 25 Apr 2017 12:02:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15982768#comment-15982768
] 

xupeng commented on HDFS-11192:
-------------------------------

Hi all:

Is there any update on this issue ? 

I have also run into the same condition HDFS-8865 resolved. And wanna know if i can merge
HDFS-8865 to my repo ?

> OOM during Quota Initialization lead to Namenode hang
> -----------------------------------------------------
>
>                 Key: HDFS-11192
>                 URL: https://issues.apache.org/jira/browse/HDFS-11192
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Brahma Reddy Battula
>            Assignee: Brahma Reddy Battula
>         Attachments: namenodeThreadDump.out
>
>
> AFAIK ,In RecurisveTask Execution, When ForkjoinThreadpool's thread dies or not able
to create,it will not notify the parent.Parent still waiting for the notify call..that's not
timed waiting also.
>  *Trace from Namenode log* 
> {noformat}
> Exception in thread "ForkJoinPool-1-worker-2" Exception in thread "ForkJoinPool-1-worker-3"
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.ForkJoinPool.createWorker(ForkJoinPool.java:1486)
>         at java.util.concurrent.ForkJoinPool.tryAddWorker(ForkJoinPool.java:1517)
>         at java.util.concurrent.ForkJoinPool.deregisterWorker(ForkJoinPool.java:1609)
>         at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:167)
> 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.ForkJoinPool.createWorker(ForkJoinPool.java:1486)
>         at java.util.concurrent.ForkJoinPool.tryAddWorker(ForkJoinPool.java:1517)
>         at java.util.concurrent.ForkJoinPool.deregisterWorker(ForkJoinPool.java:1609)
>         at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:167)
> {noformat}



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