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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1950) Increase default heap cutoff ratio from 20% to 30% and move default value to ConfigConstants
Date Tue, 28 Apr 2015 11:58:06 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14516921#comment-14516921

ASF GitHub Bot commented on FLINK-1950:

GitHub user rmetzger opened a pull request:


    FLINK-1950: Change heap safety margin computation for YARN containers.

    YARN containers will now remove `yarn.heap-cutoff-ratio`% from the memory, however at
least `yarn.heap-cutoff-min`MB.
    The default ratio is 15%, the minimum cutoff is 384MB.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/rmetzger/flink flink1950

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #637
commit ccaec6e9678c242f97bceb7bff9994cc35868e6f
Author: Robert Metzger <rmetzger@apache.org>
Date:   2015-04-28T08:55:45Z

    [FLINK-1950] Change safety margin computation for YARN containers

commit 966f918c6ba961b6c1efb4ff8d5900ce35fe2467
Author: Robert Metzger <rmetzger@apache.org>
Date:   2015-04-28T09:54:05Z



> Increase default heap cutoff ratio from 20% to 30% and move default value to ConfigConstants
> --------------------------------------------------------------------------------------------
>                 Key: FLINK-1950
>                 URL: https://issues.apache.org/jira/browse/FLINK-1950
>             Project: Flink
>          Issue Type: Task
>          Components: YARN Client
>    Affects Versions: 0.9
>            Reporter: Robert Metzger
>            Assignee: Robert Metzger
>            Priority: Blocker
> It seems that too many production users are facing issues with YARN killing containers
due to resource overusage.
> We can mitigate the issue by using only 70% of the specified memory for the heap.

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