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https://issues.apache.org/jira/browse/YARN-9198?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dapeng Sun updated YARN-9198:
-----------------------------
    Attachment: YARN-9198.001.patch

> Corrupted state from a previous version can still cause RM to fail with NPE 
> on FairScheduler
> --------------------------------------------------------------------------------------------
>
>                 Key: YARN-9198
>                 URL: https://issues.apache.org/jira/browse/YARN-9198
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler, resourcemanager
>    Affects Versions: 3.1.0, 2.8.5
>            Reporter: Dapeng Sun
>            Assignee: Dapeng Sun
>            Priority: Major
>         Attachments: YARN-9198.001.patch
>
>
> Previously, RM may fail with NPE due to YARN-4347,YARN-4000. After these 
> fixes, FairScheduler still has the same potential issue.
>  
> 201x-xx-xx xx:xx:xx,xxx ERROR resourcemanager.ResourceManager 
> (ResourceManager.java:serviceStart) - Failed to load/recover state
> java.lang.NullPointerException
>         at 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.addApplicationAttempt(FairScheduler.java)



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