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mai shurong commented on YARN-1458: ----------------------------------- sorry, there is a syntax error in the modification code, which should be as follows: int count = 0; while (resourceUsedWithWeightToResourceRatio(rMax, schedulables, type) < totalResource && count < 30) { rMax *= 2.0; ++count; } > hadoop2.2.0 fairscheduler ResourceManager Event Processor thread blocked > ------------------------------------------------------------------------ > > Key: YARN-1458 > URL: https://issues.apache.org/jira/browse/YARN-1458 > Project: Hadoop YARN > Issue Type: Bug > Components: scheduler > Affects Versions: 2.2.0 > Environment: Centos 2.6.18-238.19.1.el5 X86_64 > hadoop2.2.0 > Reporter: qingwu.fu > Labels: patch > Original Estimate: 408h > Remaining Estimate: 408h > > The ResourceManager$SchedulerEventDispatcher$EventProcessor blocked when > clients submit lots jobs, it is not easy to reapear. We run the test cluster > for days to reapear it. The output of jstack command on resourcemanager pid: > "ResourceManager Event Processor" prio=10 tid=0x00002aaab0c5f000 nid=0x5dd3 > waiting for monitor entry [0x0000000043aa9000] > java.lang.Thread.State: BLOCKED (on object monitor) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.removeApplication(FairScheduler.java:671) > - waiting to lock <0x000000070026b6e0> (a > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:1023) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:112) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:440) > at java.lang.Thread.run(Thread.java:744) > …… > "FairSchedulerUpdateThread" daemon prio=10 tid=0x00002aaab0a2c800 nid=0x5dc8 > runnable [0x00000000433a2000] > java.lang.Thread.State: RUNNABLE > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.getAppWeight(FairScheduler.java:545) > - locked <0x000000070026b6e0> (a > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AppSchedulable.getWeights(AppSchedulable.java:129) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.policies.ComputeFairShares.computeShare(ComputeFairShares.java:143) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.policies.ComputeFairShares.resourceUsedWithWeightToResourceRatio(ComputeFairShares.java:131) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.policies.ComputeFairShares.computeShares(ComputeFairShares.java:102) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.policies.FairSharePolicy.computeShares(FairSharePolicy.java:119) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSLeafQueue.recomputeShares(FSLeafQueue.java:100) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSParentQueue.recomputeShares(FSParentQueue.java:62) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.update(FairScheduler.java:282) > - locked <0x000000070026b6e0> (a > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler$UpdateThread.run(FairScheduler.java:255) > at java.lang.Thread.run(Thread.java:744) -- This message was sent by Atlassian JIRA (v6.1#6144)