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From "Kuhu Shukla (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-7244) ShuffleHandler is not aware of disks that are added
Date Mon, 16 Oct 2017 21:44:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-7244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kuhu Shukla updated YARN-7244:
------------------------------
    Attachment: YARN-7244.010.patch

Attaching revised patch that address review comments. Thanks a lot !

> ShuffleHandler is not aware of disks that are added
> ---------------------------------------------------
>
>                 Key: YARN-7244
>                 URL: https://issues.apache.org/jira/browse/YARN-7244
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Kuhu Shukla
>            Assignee: Kuhu Shukla
>         Attachments: YARN-7244.001.patch, YARN-7244.002.patch, YARN-7244.003.patch, YARN-7244.004.patch,
YARN-7244.005.patch, YARN-7244.006.patch, YARN-7244.007.patch, YARN-7244.008.patch, YARN-7244.009.patch,
YARN-7244.010.patch
>
>
> The ShuffleHandler permanently remembers the list of "good" disks on NM startup. If disks
later are added to the node then map tasks will start using them but the ShuffleHandler will
not be aware of them. The end result is that the data cannot be shuffled from the node leading
to fetch failures and re-runs of the map tasks.



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