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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1913) Cluster logjam when all resources are consumed by AM
Date Tue, 08 Apr 2014 16:28:23 GMT

    [ https://issues.apache.org/jira/browse/YARN-1913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13963143#comment-13963143
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Jason Lowe commented on YARN-1913:
----------------------------------

Which scheduler are you using?  The CapacityScheduler already has a yarn.scheduler.capacity.maximum-am-resource-percent
property, and there's a per-queue form of it as well.

> Cluster logjam when all resources are consumed by AM
> ----------------------------------------------------
>
>                 Key: YARN-1913
>                 URL: https://issues.apache.org/jira/browse/YARN-1913
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: scheduler
>    Affects Versions: 2.3.0
>            Reporter: bc Wong
>
> It's possible to deadlock a cluster by submitting many applications at once, and have
all cluster resources taken up by AMs.
> One solution is for the scheduler to limit resources taken up by AMs, as a percentage
of total cluster resources, via a "maxApplicationMasterShare" config.



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