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Hudson commented on MAPREDUCE-2855: ----------------------------------- Integrated in Hadoop-Mapreduce-0.23-Commit #606 (See [https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Commit/606/]) MAPREDUCE-2855. Passing a cached class-loader to ResourceBundle creator to minimize counter names lookup time. Contributed by Siddarth Seth. svn merge --ignore-ancestry -c 1294436 ../../trunk (Revision 1294437) Result = ABORTED vinodkv : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1294437 Files : * /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt * /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ResourceBundles.java > ResourceBundle lookup during counter name resolution takes a lot of time > ------------------------------------------------------------------------ > > 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: Siddharth Seth > Labels: mrv2 > Fix For: 0.23.2 > > Attachments: MR2855.txt > > > 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira