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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2139) Add support for disk IO isolation/scheduling for containers
Date Wed, 11 Jun 2014 03:03:02 GMT

    [ https://issues.apache.org/jira/browse/YARN-2139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14027357#comment-14027357
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Steve Loughran commented on YARN-2139:
--------------------------------------

I don't think I was clear enough, sorry

HDFS disk IO takes place in the datanode *not in any YARN container*. Accordingly cgroup throttling
of container disk IO has no effect on HDFS bandwidth/IOPs. Network throttling could, if it
it limited loopback and remote network load -but anything over the unix-domain-sockets bypass
isn't going over the tcp stack.

> Add support for disk IO isolation/scheduling for containers
> -----------------------------------------------------------
>
>                 Key: YARN-2139
>                 URL: https://issues.apache.org/jira/browse/YARN-2139
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Wei Yan
>            Assignee: Wei Yan
>




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