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From "Hong Tang (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-1156) Caching localized counter names in mapred.Counters
Date Mon, 26 Oct 2009 22:24:59 GMT
Caching localized counter names in mapred.Counters

                 Key: MAPREDUCE-1156
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1156
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
            Reporter: Hong Tang

Using YourKit profiling mumak, we found that MissingResourceException was thrown and caught
1.6 million times in Counters.Group.localize for several hundred of jobs. The resource bundle
look up and costly exception processing can be easily avoided if we have a global cache of
localized counter names.

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