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https://issues.apache.org/jira/browse/YARN-292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13741380#comment-13741380
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Zhijie Shen commented on YARN-292:
----------------------------------
bq. FIFO Scheduler uses TreeMap to keep applications in FIFO
order,ConcurrentHashMap will break this featrue. Right?
AFAIK, FIFO is not controlled by FifoScheduler.applications, and TreeMap cannot
be used for ordering. Instead, FifoPolicy has a FifoComparator, which can be
used to sort Schedulable object collection. [~vinodkv], would you please
confirm it?
> ResourceManager throws ArrayIndexOutOfBoundsException while handling
> CONTAINER_ALLOCATED for application attempt
> ----------------------------------------------------------------------------------------------------------------
>
> Key: YARN-292
> URL: https://issues.apache.org/jira/browse/YARN-292
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Affects Versions: 2.0.1-alpha
> Reporter: Devaraj K
> Assignee: Zhijie Shen
> Attachments: YARN-292.1.patch, YARN-292.2.patch
>
>
> {code:xml}
> 2012-12-26 08:41:15,030 ERROR
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler:
> Calling allocate on removed or non existant application
> appattempt_1356385141279_49525_000001
> 2012-12-26 08:41:15,031 ERROR
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in
> handling event type CONTAINER_ALLOCATED for applicationAttempt
> application_1356385141279_49525
> java.lang.ArrayIndexOutOfBoundsException: 0
> at java.util.Arrays$ArrayList.get(Arrays.java:3381)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl$AMContainerAllocatedTransition.transition(RMAppAttemptImpl.java:655)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl$AMContainerAllocatedTransition.transition(RMAppAttemptImpl.java:644)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$SingleInternalArc.doTransition(StateMachineFactory.java:357)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:298)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:43)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:443)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl.handle(RMAppAttemptImpl.java:490)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl.handle(RMAppAttemptImpl.java:80)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$ApplicationAttemptEventDispatcher.handle(ResourceManager.java:433)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$ApplicationAttemptEventDispatcher.handle(ResourceManager.java:414)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:126)
> at
> org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:75)
> at java.lang.Thread.run(Thread.java:662)
> {code}
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