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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4302) NM goes down if error encountered during log aggregation
Date Fri, 01 Jun 2012 17:17:23 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13287546#comment-13287546
] 

Hadoop QA commented on MAPREDUCE-4302:
--------------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12530572/MAPREDUCE-4302.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 1 new or modified test files.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed unit tests in hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2430//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2430//console

This message is automatically generated.
                
> NM goes down if error encountered during log aggregation
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-4302
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4302
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 0.23.0, 2.0.0-alpha, trunk
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>         Attachments: MAPREDUCE-4302.patch
>
>
> When a container launch request is sent to the NM, if _any_ exception occurs during the
init of log aggregation then the NM goes down.  The problem can be induced by situations including,
but certainly not limited to: transient rpc connection issues, missing tokens, expired tokens,
permissions, full/quota exceeded dfs, etc.  The problem may occur with and without security
enabled.
> The ramification is an entire cluster can be rather easily brought down either maliciously,
accidentally, or via a submission bug.

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