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Posted to yarn-issues@hadoop.apache.org by "Kuhu Shukla (JIRA)" <ji...@apache.org> on 2017/10/11 22:33:00 UTC
[jira] [Updated] (YARN-7244) ShuffleHandler is not aware of disks
that are added
[ https://issues.apache.org/jira/browse/YARN-7244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kuhu Shukla updated YARN-7244:
------------------------------
Attachment: YARN-7244.003.patch
Updated patch closer to the design Jason mentioned earlier. Adds a new Path Handler that is passed from the Containermanager -> AuxServices -> AuxiliaryService -> ShuffleHandler.
Appreciate any comments on the approach/patch. 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
>
>
> 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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