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Posted to yarn-dev@hadoop.apache.org by "Thomas Graves (JIRA)" <ji...@apache.org> on 2012/10/22 03:08:11 UTC
[jira] [Created] (YARN-177) CapacityScheduler - adding a queue
while the RM is running has wacky results
Thomas Graves created YARN-177:
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Summary: CapacityScheduler - adding a queue while the RM is running has wacky results
Key: YARN-177
URL: https://issues.apache.org/jira/browse/YARN-177
Project: Hadoop YARN
Issue Type: Bug
Components: capacityscheduler
Affects Versions: 0.23.3
Reporter: Thomas Graves
Assignee: Thomas Graves
Priority: Critical
Adding a queue to the capacity scheduler while the RM is running and then running a job in the queue added results in very strange behavior. The cluster Total Memory can either decrease or increase. We had a cluster where total memory decreased to almost 1/6th the capacity. Running on a small test cluster resulted in the capacity going up by simply adding a queue and running wordcount.
Looking at the RM logs, used memory can go negative but other logs show the number positive:
2012-10-21 22:56:44,796 [ResourceManager Event Processor] INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue: assignedContainer queue=root usedCapacity=0.0375 absoluteUsedCapacity=0.0375 used=memory: 7680 cluster=memory: 204800
2012-10-21 22:56:45,831 [ResourceManager Event Processor] INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue: completedContainer queue=root usedCapacity=-0.0225 absoluteUsedCapacity=-0.0225 used=memory: -4608 cluster=memory: 204800
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