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From "Szilard Nemeth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-9651) Resource Manager throws NPE
Date Wed, 03 Jul 2019 08:12:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-9651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16877618#comment-16877618
] 

Szilard Nemeth commented on YARN-9651:
--------------------------------------

Hi [~zhangqw]!
Could you please update the jira title to be more specific? I.e. in short, what circumstances
can lead to this NPE from RM? 
Thanks!

> Resource Manager throws NPE
> ---------------------------
>
>                 Key: YARN-9651
>                 URL: https://issues.apache.org/jira/browse/YARN-9651
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 3.1.1
>         Environment: os: centos 7.1
> hadoop 3.1.1 release
>  
>            Reporter: zhangqw
>            Priority: Major
>         Attachments: yarn-rm-npe.log
>
>
> We use hadoop 3.1.1 release,running some regular job when RM Stopped with NPE.
> {code:java}
> 2019-06-13 17:06:06,664 FATAL event.EventDispatcher (EventDispatcher.java:run(75)) -
Error in handling event type APP_ATTEMPT_ADDED to the Event Dispatcher
> java.lang.NullPointerException
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt.transferStateFromPreviousAttempt(SchedulerApplicationAttempt.java:1158)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerApp.transferStateFromPreviousAttempt(FiCaSchedulerApp.java:852)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.addApplicationAttempt(CapacityScheduler.java:982)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:1730)
> at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:167)
> at org.apache.hadoop.yarn.event.EventDispatcher$EventProcessor.run(EventDispatcher.java:66)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> I checked [related issue: YARN-2340|https://issues.apache.org/jira/browse/YARN-2340] 
, but it's already fixed in my running version. 



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