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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-7774) Miscellaneous fixes to the PlacementProcessor
Date Fri, 19 Jan 2018 06:28:01 GMT

     [ https://issues.apache.org/jira/browse/YARN-7774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun Suresh updated YARN-7774:
------------------------------
    Summary: Miscellaneous fixes to the PlacementProcessor  (was: Miscellaneous minor fixes
to the PlacementProcessor)

> Miscellaneous fixes to the PlacementProcessor
> ---------------------------------------------
>
>                 Key: YARN-7774
>                 URL: https://issues.apache.org/jira/browse/YARN-7774
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>            Priority: Blocker
>         Attachments: YARN-7774-YARN-6592.001.patch, YARN-7774-YARN-6592.002.patch, YARN-7774-YARN-6592.003.patch,
YARN-7774-YARN-6592.004.patch
>
>
> JIRA to track the following minor changes:
> * Scheduler must normalize requests that are made using the {{attemptAllocationOnNode}}
method.
> * The Placement Algorithm should shuffle the order it looks at nodes between two requests
- to ensure a) more nodes are looked at and b) bias against placing too many containers on
the same node
> * Add a placement retry loop for rejected requests - since there are cases especially,
when Constraints will be satisfied after a subsequent request has been placed.



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