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From "nijel (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-90) NodeManager should identify failed disks becoming good back again
Date Wed, 25 Sep 2013 14:08:03 GMT

    [ https://issues.apache.org/jira/browse/YARN-90?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13777530#comment-13777530
] 

nijel commented on YARN-90:
---------------------------

Hi Ravi,
Thanks for the comments

Patch is updated with the comments

About the test part, Executed the test cases in node manager project locally. Except 2 all
are passing. Failures are not related to directory service.
                
> NodeManager should identify failed disks becoming good back again
> -----------------------------------------------------------------
>
>                 Key: YARN-90
>                 URL: https://issues.apache.org/jira/browse/YARN-90
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>            Reporter: Ravi Gummadi
>         Attachments: YARN-90.1.patch, YARN-90.patch
>
>
> MAPREDUCE-3121 makes NodeManager identify disk failures. But once a disk goes down, it
is marked as failed forever. To reuse that disk (after it becomes good), NodeManager needs
restart. This JIRA is to improve NodeManager to reuse good disks(which could be bad some time
back).

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