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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2381) JobTracker instrumentation not consistent about error handling
Date Wed, 18 May 2011 19:24:47 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035601#comment-13035601

Hudson commented on MAPREDUCE-2381:

Integrated in Hadoop-Mapreduce-trunk-Commit #682 (See [https://builds.apache.org/hudson/job/Hadoop-Mapreduce-trunk-Commit/682/])
    MAPREDUCE-2381. JobTracker instrumentation not consistent about error handling. Contributed
by Philip Zeyliger.

tomwhite : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1124381
Files : 
* /hadoop/mapreduce/trunk/CHANGES.txt
* /hadoop/mapreduce/trunk/src/java/org/apache/hadoop/mapred/JobTracker.java

> JobTracker instrumentation not consistent about error handling
> --------------------------------------------------------------
>                 Key: MAPREDUCE-2381
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2381
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Philip Zeyliger
>            Assignee: Philip Zeyliger
>             Fix For: 0.23.0
>         Attachments: MAPREDUCE-2381.patch.txt
> In the current code, if the class specified by the JobTracker instrumentation config
property is not there, the JobTracker fails to start with a ClassNotFound.  If it's there,
but it can't load for whatever reason, the JobTracker continues with the default.  Having
two different error-handling routes is a bit confusing; I propose to move one line so that
it's consistent.  (On the TaskTracker instrumentation side, if any of the multiple instrumentations
aren't available, the default is used.)
> The attached patch merely moves a line inside of the try block that's already there.

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