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Karthik Kambatla updated MAPREDUCE-4518: ---------------------------------------- Attachment: MR-4518_branch1.patch The patch implements the proposed optimization. > FairScheduler: PoolSchedulable#updateDemand() - potential redundant > aggregation > ------------------------------------------------------------------------------- > > Key: MAPREDUCE-4518 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-4518 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Components: contrib/fair-share > Affects Versions: 1.0.3 > Reporter: Karthik Kambatla > Assignee: Karthik Kambatla > Attachments: MR-4518_branch1.patch > > > In FS, PoolSchedulable#updateDemand() limits the demand to maxTasks only > after iterating though all the pools and computing the final demand. > By checking if the demand has reached maxTasks in every iteration, we can > avoid redundant work, at the expense of one condition check every iteration. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira