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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6428) Queue AM limit is not honored in CS always
Date Tue, 27 Jun 2017 04:48:02 GMT

    [ https://issues.apache.org/jira/browse/YARN-6428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16064257#comment-16064257
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Sunil G commented on YARN-6428:
-------------------------------

I had an offline discussion with [~leftnoteasy]. I think there might be a compatibility break
though its from Resources class which is marked as Unstable. Since {{multiplyAndNormalizeUp}}
public and used within, it  is a breakage when {{double}} is changed to {{float}} in {{multiplyAndNormalizeUp}}.
Adding a new {{float}} type  API will add more complexities to Resources class going forward.
So using {{Math.floor(value * 10^N) / 10^N}} where N could be 6 will help to resolve the problem
for now. Thoughts?

> Queue AM limit is not honored  in CS always
> -------------------------------------------
>
>                 Key: YARN-6428
>                 URL: https://issues.apache.org/jira/browse/YARN-6428
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Bibin A Chundatt
>            Assignee: Bibin A Chundatt
>         Attachments: YARN-6428.0001.patch, YARN-6428.0002.patch
>
>
> Steps to reproduce
> ------------------------
> Setup cluster with 40 GB and 40 vcores with 4 Node managers with 10 GB each.
> Configure 100% to default queue as capacity and max am limit as 10 %
> Minimum scheduler memory and vcore as 512,1
> *Expected* 
> AM limit 4096 and 4 vores
> *Actual*
> AM limit 4096+512 and 4+1 vcore



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