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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-7486) Race condition in service AM that can cause NPE
Date Tue, 14 Nov 2017 04:42:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-7486?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jian He updated YARN-7486:
--------------------------
    Attachment:     (was: YARN-7486.01.patch)

> Race condition in service AM that can cause NPE
> -----------------------------------------------
>
>                 Key: YARN-7486
>                 URL: https://issues.apache.org/jira/browse/YARN-7486
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Jian He
>            Assignee: Jian He
>
> 1. container1 completed for instance1
> 2. instance1 is added to pending list
> 3. container2 allocated, and assigned to instance1, it records the container2 inside
instance1
> 4. in the meantime, instance1 ContainerStoppedTransition is called and that set the container
back to null. 
> This cause the recorded container lost.
> {code}
> 		java.lang.NullPointerException
> 			at org.apache.hadoop.yarn.service.provider.ProviderUtils.initCompTokensForSubstitute(ProviderUtils.java:402)
> 			at org.apache.hadoop.yarn.service.provider.AbstractProviderService.buildContainerLaunchContext(AbstractProviderService.java:70)
> 			at org.apache.hadoop.yarn.service.containerlaunch.ContainerLaunchService$ContainerLauncher.run(ContainerLaunchService.java:89)
> 			at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 			at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 			at java.lang.Thread.run(Thread.java:745)
> {code}



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