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From "Siddharth Seth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-162) nodemanager log aggregation has scaling issues with namenode
Date Mon, 28 Sep 2015 18:38:05 GMT

    [ https://issues.apache.org/jira/browse/YARN-162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14933751#comment-14933751
] 

Siddharth Seth commented on YARN-162:
-------------------------------------

Go ahead.

> nodemanager log aggregation has scaling issues with namenode
> ------------------------------------------------------------
>
>                 Key: YARN-162
>                 URL: https://issues.apache.org/jira/browse/YARN-162
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: 0.23.3
>            Reporter: Nathan Roberts
>            Assignee: Siddharth Seth
>            Priority: Critical
>         Attachments: YARN-162.txt, YARN-162_WIP.txt, YARN-162_v2.txt, YARN-162_v2.txt
>
>
> Log aggregation causes fd explosion on the namenode. On large clusters this can exhaust
FDs to the point where datanodes can't check-in.



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