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Hadoop QA commented on YARN-276: -------------------------------- {color:red}-1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12561672/YARN-276.patch against trunk revision . {color:red}-1 patch{color}. The patch command could not apply the patch. Console output: https://builds.apache.org/job/PreCommit-YARN-Build/237//console This message is automatically generated. > Capacity Scheduler can hang when submit many jobs concurrently > -------------------------------------------------------------- > > Key: YARN-276 > URL: https://issues.apache.org/jira/browse/YARN-276 > Project: Hadoop YARN > Issue Type: Bug > Components: capacityscheduler > Affects Versions: 3.0.0, 2.0.1-alpha > Reporter: nemon lou > Attachments: YARN-276.patch, YARN-276.patch, YARN-276.patch, > YARN-276.patch > > Original Estimate: 24h > Remaining Estimate: 24h > > In hadoop2.0.1,When i submit many jobs concurrently at the same time,Capacity > scheduler can hang with most resources taken up by AM and don't have enough > resources for tasks.And then all applications hang there. > The cause is that "yarn.scheduler.capacity.maximum-am-resource-percent" not > check directly.Instead ,this property only used for maxActiveApplications. > And maxActiveApplications is computed by minimumAllocation (not by Am > actually used). -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira