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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5646) Documentation for scheduling of OPPORTUNISTIC containers
Date Wed, 07 Dec 2016 23:23:59 GMT

    [ https://issues.apache.org/jira/browse/YARN-5646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15730269#comment-15730269
] 

Daniel Templeton commented on YARN-5646:
----------------------------------------

Overall a well written doc.  Minor comments:

* "list loaded nodes" should be "least loaded nodes"
* "In case of" should be "In the case of"
* "the NM on a node whose queue length is above the threshold, discards opportunistic containers
to meet this maximal value" should drop the comma and be "an NM ..."
* It would be good to call out the defaults for the properties
* It's not obvious what the incremental properties do.  Min and max are self-explanatory,
but I think you have to explain the increments.
* yarn.opportunistic-container-allocation.nodes-used needs more explanation.  I can guess
what it does, but it would be better if you just explain it more.
* yarn.nm-container-queuing.min-queue-length needs more explanation.  I have no idea what
it does from the doc.  How can a minimum be enforced?  What if there are no jobs?
* Same for yarn.nm-container-queuing.min-queue-wait-time-ms
* "if a map task fail" should be "if a map task fails"
* "Also, when clicking" should drop the "Also"
* "the open JIRAs" should just be "the JIRAs" unless you plan to keep this doc updated
* "not based on the allocated" is missing an object of the preposition



> Documentation for scheduling of OPPORTUNISTIC containers
> --------------------------------------------------------
>
>                 Key: YARN-5646
>                 URL: https://issues.apache.org/jira/browse/YARN-5646
>             Project: Hadoop YARN
>          Issue Type: Task
>            Reporter: Konstantinos Karanasos
>            Assignee: Konstantinos Karanasos
>            Priority: Blocker
>         Attachments: YARN-5646.001.patch
>
>
> This is for adding documentation regarding the scheduling of OPPORTUNISTIC containers.
> It includes both the centralized (YARN-5220) and the distributed (YARN-2877) scheduling.



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