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Karthik Kambatla commented on YARN-4743: ---------------------------------------- +1 Checking this in.. > ResourceManager crash because TimSort > ------------------------------------- > > Key: YARN-4743 > URL: https://issues.apache.org/jira/browse/YARN-4743 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler > Affects Versions: 3.0.0-alpha2 > Reporter: Zephyr Guo > Assignee: Zephyr Guo > Labels: oct16-easy > Fix For: 3.0.0-alpha2 > > Attachments: YARN-4743-v1.patch, YARN-4743-v2.patch, > YARN-4743-v3.patch, YARN-4743-v4.patch, YARN-4743-v5.patch, timsort.log > > > {code} > 2016-02-26 14:08:50,821 FATAL > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in > handling event type NODE_UPDATE to the scheduler > java.lang.IllegalArgumentException: Comparison method violates its general > contract! > at java.util.TimSort.mergeHi(TimSort.java:868) > at java.util.TimSort.mergeAt(TimSort.java:485) > at java.util.TimSort.mergeCollapse(TimSort.java:410) > at java.util.TimSort.sort(TimSort.java:214) > at java.util.TimSort.sort(TimSort.java:173) > at java.util.Arrays.sort(Arrays.java:659) > at java.util.Collections.sort(Collections.java:217) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSLeafQueue.assignContainer(FSLeafQueue.java:316) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSParentQueue.assignContainer(FSParentQueue.java:240) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.attemptScheduling(FairScheduler.java:1091) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.nodeUpdate(FairScheduler.java:989) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:1185) > 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:684) > at java.lang.Thread.run(Thread.java:745) > 2016-02-26 14:08:50,822 INFO > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Exiting, bbye.. > {code} > Actually, this bug found in 2.6.0-cdh5.4.7. {{FairShareComparator}} is not > transitive. > We get NaN when memorySize=0 and weight=0. > {code:title=FairSharePolicy.java} > useToWeightRatio1 = s1.getResourceUsage().getMemorySize() / > s1.getWeights().getWeight(ResourceType.MEMORY) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org