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Hadoop QA commented on MAPREDUCE-3568: -------------------------------------- +1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12508693/MAPREDUCE-3568-20111227.txt against trunk revision . +1 @author. The patch does not contain any @author tags. +1 tests included. The patch appears to include 15 new or modified tests. +1 javadoc. The javadoc tool did not generate any warning messages. +1 javac. The applied patch does not increase the total number of javac compiler warnings. +1 eclipse:eclipse. The patch built with eclipse:eclipse. +1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9) warnings. +1 release audit. The applied patch does not increase the total number of release audit warnings. +1 core tests. The patch passed unit tests in . +1 contrib tests. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1510//testReport/ Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1510//console This message is automatically generated. > Optimize Job's progress calculations in MR AM > --------------------------------------------- > > Key: MAPREDUCE-3568 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-3568 > Project: Hadoop Map/Reduce > Issue Type: Sub-task > Components: mr-am, mrv2, performance > Affects Versions: 0.23.0 > Reporter: Vinod Kumar Vavilapalli > Assignee: Vinod Kumar Vavilapalli > Priority: Critical > Fix For: 0.23.1 > > Attachments: MAPREDUCE-3568-20111215.1.txt, > MAPREDUCE-3568-20111220.txt, MAPREDUCE-3568-20111222.txt, > MAPREDUCE-3568-20111227.txt > > > Besides catering to client requests, Job progress is calculated in every > heartbeat to the RM so as to print the MR AM's progress. Today the map and > reduce progresses are calculated by looking up of each task in a big map > while we can simply make do with a scan and aggregate. With large number of > tasks, this can make a difference. -- 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