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https://issues.apache.org/jira/browse/YARN-7244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kuhu Shukla updated YARN-7244:
------------------------------
    Attachment: YARN-7244.009.patch

> 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
>
>
> 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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