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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-2381) JobTracker instrumentation not consistent about error handling
Date Wed, 18 May 2011 18:54:47 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2381?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tom White updated MAPREDUCE-2381:
---------------------------------

       Resolution: Fixed
    Fix Version/s: 0.23.0
     Hadoop Flags: [Reviewed]
           Status: Resolved  (was: Patch Available)

I've just committed this. Thanks, Philip!

> 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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