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Scott Chen commented on MAPREDUCE-1825: --------------------------------------- > 2) FairSchedulerServlet is locking up in showPools method as soon as it tries > to synchronize on "scheduler". It continues again as soon as JIB.initTasks() > finish. Not sure how this is happening as initTasks() lock JIB's monitor and > showPools lock scheduler's monitor. Anyway, the patch doesn't seem to address > the FSS issue. Thanks for the testing, Priyo. Can you take a jstack at the moment that it waits for scheduler? Then we can figure out the lock dependency. > jobqueue_details.jsp and FairSchedulerServelet should not call finishedMaps > and finishedReduces when job is not initialized > --------------------------------------------------------------------------------------------------------------------------- > > Key: MAPREDUCE-1825 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1825 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: jobtracker > Affects Versions: 0.20.1 > Reporter: Amareshwari Sriramadasu > Assignee: Scott Chen > Fix For: 0.22.0 > > Attachments: MAPREDUCE-1825.txt, MAPREDUCE-1825_1.txt, > MAPREDUCE-1825_2.txt > > > JobInProgress.finishedMaps() and finishedReduces() are synchronized. They are > called from jobqueue_details.jsp and FairSchedulerServelet which iterates > through all jobs. If any job is in initialization, these pages don't come up > until the initialization finishes. > See > [comment|https://issues.apache.org/jira/browse/MAPREDUCE-1354?focusedCommentId=12834139&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12834139] > for more details -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.