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Hadoop QA commented on YARN-2313: --------------------------------- {color:red}-1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12656304/YARN-2313.1.patch against trunk revision . {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:green}+1 tests included{color}. The patch appears to include 1 new or modified test files. {color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings. {color:green}+1 javadoc{color}. There were no new javadoc warning messages. {color:green}+1 eclipse:eclipse{color}. The patch built with eclipse:eclipse. {color:red}-1 findbugs{color}. The patch appears to introduce 1 new Findbugs (version 2.0.3) warnings. {color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings. {color:red}-1 core tests{color}. The patch failed these unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager: org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServices org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesCapacitySched org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesDelegationTokens org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesAppsModification org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesNodes org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesApps org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesFairScheduler {color:green}+1 contrib tests{color}. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-YARN-Build/4346//testReport/ Findbugs warnings: https://builds.apache.org/job/PreCommit-YARN-Build/4346//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-yarn-server-resourcemanager.html Console output: https://builds.apache.org/job/PreCommit-YARN-Build/4346//console This message is automatically generated. > Livelock can occur on FairScheduler when there are lots entry in queue > ---------------------------------------------------------------------- > > Key: YARN-2313 > URL: https://issues.apache.org/jira/browse/YARN-2313 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler > Affects Versions: 2.4.1 > Reporter: Tsuyoshi OZAWA > Assignee: Tsuyoshi OZAWA > Attachments: YARN-2313.1.patch, rm-stack-trace.txt > > > Observed livelock on FairScheduler when there are lots entry in queue. After > my investigating code, following case can occur: > 1. {{update()}} called by UpdateThread takes longer times than > UPDATE_INTERVAL(500ms) if there are lots queue. > 2. UpdateThread goes busy loop. > 3. Other threads(AllocationFileReloader, > ResourceManager$SchedulerEventDispatcher) can wait forever. -- This message was sent by Atlassian JIRA (v6.2#6252)