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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3188) Lots of errors in logs when daemon startup fails
Date Fri, 14 Oct 2011 21:56:12 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13127901#comment-13127901
] 

Hadoop QA commented on MAPREDUCE-3188:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12499073/mr-3188.txt
  against trunk revision .

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

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    -1 javadoc.  The javadoc tool appears to have generated 20 warning messages.

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

    +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 .

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1027//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1027//console

This message is automatically generated.
                
> Lots of errors in logs when daemon startup fails
> ------------------------------------------------
>
>                 Key: MAPREDUCE-3188
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3188
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: mr-3188.txt
>
>
> Since the MR2 daemons are made up of lots of component services, if one of those components
fails to start, it will cause the others to shut down as well, even if they haven't fully
finished starting up. Currently, this causes the error output to have a bunch of NullPointerExceptions,
IllegalStateExceptions, etc, which mask the actual root cause error at the top.

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