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Hudson commented on MAPREDUCE-3944: ----------------------------------- Integrated in Hadoop-Common-trunk-Commit #1843 (See [https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1843/]) MAPREDUCE-3944. Change the history jobs/ webservice to return partial job info for a significant performance improvement. (Contributed by Robert Joseph Evans) (Revision 1297672) Result = SUCCESS sseth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1297672 Files : * /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/CompletedJob.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/webapp/HsWebServices.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/webapp/dao/JobInfo.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/MockHistoryJobs.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/webapp/TestHsWebServicesJobs.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/webapp/TestHsWebServicesJobsQuery.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/webapp/VerifyJobsUtils.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/HistoryServerRest.apt.vm > JobHistory web services are slower then the UI and can easly overload the JH > ---------------------------------------------------------------------------- > > Key: MAPREDUCE-3944 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-3944 > Project: Hadoop Map/Reduce > Issue Type: Sub-task > Components: mrv2 > Affects Versions: 0.23.1, 0.23.2 > Reporter: Robert Joseph Evans > Assignee: Robert Joseph Evans > Priority: Blocker > Fix For: 0.23.2 > > Attachments: MR-3944.txt, MR-3944.txt > > > When our first customer started using the Job History web services today the > History Server ground to a halt. We found 250 Jetty threads stuck on the > following stack trace. > {noformat} > java.lang.Thread.State: BLOCKED (on object monitor) > at > org.apache.hadoop.mapreduce.v2.hs.JobHistory.getJob(JobHistory.java:898) > - waiting to lock <0x00002aaab364ba60> (a > org.apache.hadoop.mapreduce.v2.hs.JobHistory) > at > org.apache.hadoop.mapreduce.v2.hs.webapp.HsWebServices.getJobs(HsWebServices.java:188) > {noformat} > HsWebServices.java:188 corresponds to the /mapreduce/jobs service. > Looking at the code there are a number of optimizations that need to be done > to improve its performance. -- 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