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https://issues.apache.org/jira/browse/MAPREDUCE-763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved MAPREDUCE-763.
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Resolution: Incomplete
This is likely stale.
> Capacity scheduler should clean up reservations if it runs tasks on nodes
> other than where it has made reservations
> -------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-763
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-763
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: capacity-sched
> Affects Versions: 0.21.0
> Reporter: Hemanth Yamijala
> Assignee: rahul k singh
>
> Currently capacity scheduler makes a reservation on nodes for high memory
> jobs that cannot currently run at the time. It could happen that in the
> meantime other tasktrackers become free to run the tasks of this job. Ideally
> in the next heartbeat from the reserved TTs the reservation should be
> removed. Otherwise it could unnecessarily block capacity for a while (until
> the TT has enough slots free to run a task of this job).
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