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https://issues.apache.org/jira/browse/YARN-4365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15024847#comment-15024847
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Kuhu Shukla commented on YARN-4365:
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Thanks a lot Jason. Will update revised patch shorty.
> FileSystemNodeLabelStore should check for root dir existence on startup
> -----------------------------------------------------------------------
>
> Key: YARN-4365
> URL: https://issues.apache.org/jira/browse/YARN-4365
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.7.2
> Reporter: Jason Lowe
> Assignee: Kuhu Shukla
> Attachments: YARN-4365-1.patch
>
>
> If the namenode is in safe mode for some reason then FileSystemNodeLabelStore
> will prevent the RM from starting since it unconditionally tries to create
> the root directory for the label store. If the root directory already exists
> and no labels are changing then we shouldn't prevent the RM from starting
> even if the namenode is in safe mode.
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