Karthik Kambatla created MAPREDUCE-4518:
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Summary: 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
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.
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