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From "Kuhu Shukla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4365) FileSystemNodeLabelStore should check for root dir existence on startup
Date Mon, 23 Nov 2015 19:31:11 GMT

    [ https://issues.apache.org/jira/browse/YARN-4365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15022816#comment-15022816
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Kuhu Shukla commented on YARN-4365:
-----------------------------------

Test failure is irreproducible locally and is unrelated to the patch as far as I can see.
 Findbugs warnings are coming from {{org.apache.hadoop.yarn.api.protocolrecords.impl.pb.AllocateResponsePBImpl}},
which are not related to this patch.

> 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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