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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3153) Capacity Scheduler max AM resource limit for queues is defined as percentage but used as ratio
Date Fri, 06 Feb 2015 22:24:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-3153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14310049#comment-14310049
] 

Wangda Tan commented on YARN-3153:
----------------------------------

Good suggestion, I think we can deprecate the precent one, make sure its value within \[0,
1\], and use a ratio/factor as the new option name. Sounds good?

> Capacity Scheduler max AM resource limit for queues is defined as percentage but used
as ratio
> ----------------------------------------------------------------------------------------------
>
>                 Key: YARN-3153
>                 URL: https://issues.apache.org/jira/browse/YARN-3153
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>            Priority: Critical
>
> In existing Capacity Scheduler, it can limit max applications running within a queue.
The config is yarn.scheduler.capacity.maximum-am-resource-percent, but actually, it is used
as "ratio", in implementation, it assumes input will be \[0,1\]. So now user can specify it
up to 100, which makes AM can use 100x of queue capacity. We should fix that.



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