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https://issues.apache.org/jira/browse/YARN-2617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14155912#comment-14155912
 ] 

Hadoop QA commented on YARN-2617:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12672458/YARN-2617.5.patch
  against trunk revision 0708827.

    {color:red}-1 patch{color}.  Trunk compilation may be broken.

Console output: https://builds.apache.org/job/PreCommit-YARN-Build/5225//console

This message is automatically generated.

> NM does not need to send finished container whose APP is not running to RM
> --------------------------------------------------------------------------
>
>                 Key: YARN-2617
>                 URL: https://issues.apache.org/jira/browse/YARN-2617
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.6.0
>            Reporter: Jun Gong
>            Assignee: Jun Gong
>             Fix For: 2.6.0
>
>         Attachments: YARN-2617.2.patch, YARN-2617.3.patch, YARN-2617.4.patch, 
> YARN-2617.5.patch, YARN-2617.5.patch, YARN-2617.patch
>
>
> We([~chenchun]) are testing RM work preserving restart and found the 
> following logs when we ran a simple MapReduce task "PI". NM continuously 
> reported completed containers whose Application had already finished while AM 
> had finished. 
> {code}
> 2014-09-26 17:00:42,228 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: 
> Null container completed...
> 2014-09-26 17:00:42,228 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: 
> Null container completed...
> 2014-09-26 17:00:43,230 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: 
> Null container completed...
> 2014-09-26 17:00:43,230 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: 
> Null container completed...
> 2014-09-26 17:00:44,233 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: 
> Null container completed...
> 2014-09-26 17:00:44,233 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: 
> Null container completed...
> {code}
> In the patch for YARN-1372, ApplicationImpl on NM should guarantee to  clean 
> up already completed applications. But it will only remove appId from  
> 'app.context.getApplications()' when ApplicaitonImpl received evnet 
> 'ApplicationEventType.APPLICATION_LOG_HANDLING_FINISHED' , however NM might 
> receive this event for a long time or could not receive. 
> * For NonAggregatingLogHandler, it wait for 
> YarnConfiguration.NM_LOG_RETAIN_SECONDS which is 3 * 60 * 60 sec by default, 
> then it will be scheduled to delete Application logs and send the event.
> * For LogAggregationService, it might fail(e.g. if user does not have HDFS 
> write permission), and it will not send the event.



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