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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5889) Improve user-limit calculation in capacity scheduler
Date Mon, 06 Feb 2017 20:00:43 GMT

    [ https://issues.apache.org/jira/browse/YARN-5889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15854640#comment-15854640
] 

Eric Payne commented on YARN-5889:
----------------------------------

[~sunilg], Thanks for running those manual tests. Those were the same tests that I was running.

I discovered that this was not something introduced by this patch, but it happens in trunk
as well. Also, I discovered that it doesn't happen for a cluster with 1, 2, or 3 nodemanagers,
but when the 4th nodemanager is added, it starts happening.

At any rate, the good news is that this is not a problem with your patch. I have a couple
of more things I want to check out on the patch before my review is complete. I'll get back
to you soon.

> Improve user-limit calculation in capacity scheduler
> ----------------------------------------------------
>
>                 Key: YARN-5889
>                 URL: https://issues.apache.org/jira/browse/YARN-5889
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacity scheduler
>            Reporter: Sunil G
>            Assignee: Sunil G
>         Attachments: YARN-5889.0001.patch, YARN-5889.0001.suggested.patchnotes, YARN-5889.0002.patch,
YARN-5889.0003.patch, YARN-5889.0004.patch, YARN-5889.0005.patch, YARN-5889.0006.patch, YARN-5889.0007.patch,
YARN-5889.0008.patch, YARN-5889.0009.patch, YARN-5889.0010.patch, YARN-5889.v0.patch, YARN-5889.v1.patch,
YARN-5889.v2.patch
>
>
> Currently user-limit is computed during every heartbeat allocation cycle with a write
lock. To improve performance, this tickets is focussing on moving user-limit calculation out
of heartbeat allocation flow.



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