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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-162) nodemanager log aggregation has scaling issues with namenode
Date Wed, 28 Nov 2012 17:03:01 GMT

    [ https://issues.apache.org/jira/browse/YARN-162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13505654#comment-13505654
] 

Hadoop QA commented on YARN-162:
--------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12554200/YARN-162_v2.txt
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/180//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/180//console

This message is automatically generated.
                
> 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: Bug
>          Components: nodemanager
>    Affects Versions: 0.23.3
>            Reporter: Nathan Roberts
>            Assignee: Siddharth Seth
>            Priority: Critical
>         Attachments: YARN-162.txt, YARN-162_v2.txt, YARN-162_v2.txt, YARN-162_WIP.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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