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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-2855) ResourceBundle lookup during counter name resolution takes a lot of time
Date Thu, 18 Aug 2011 17:06:27 GMT
ResourceBundle lookup during counter name resolution takes a lot of time
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                 Key: MAPREDUCE-2855
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2855
             Project: Hadoop Map/Reduce
          Issue Type: Bug
    Affects Versions: 0.23.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon


Loading a job status page in trunk takes a lot of time, and it seems like most of the time
is spent resolving counter names. Looking through the JDK source, ResourceBundle.getBundle(String)
ends up calling getClassContext() which is not very efficient. I think if we pass our own
classloader manually it will be faster. In Counters.incrAllCounters, we may also be able to
avoid setting the counter name if one is already set.

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