[jira] [Updated] (YARN-45) Scheduler feedback to AM to release containers

["Vinod Kumar Vavilapalli (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-45?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinod Kumar Vavilapalli updated YARN-45:
----------------------------------------

    Issue Type: Bug  (was: Sub-task)
        Parent:     (was: YARN-397)

> Scheduler feedback to AM to release containers
> ----------------------------------------------
>
>                 Key: YARN-45
>                 URL: https://issues.apache.org/jira/browse/YARN-45
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>            Reporter: Chris Douglas
>            Assignee: Carlo Curino
>             Fix For: 2.1.0-beta
>
>         Attachments: YARN-45.1.patch, YARN-45.patch, YARN-45.patch, YARN-45.patch, YARN-45.patch, YARN-45.patch, YARN-45.patch, YARN-45_design_thoughts.pdf
>
>
> The ResourceManager strikes a balance between cluster utilization and strict enforcement of resource invariants in the cluster. Individual allocations of containers must be reclaimed- or reserved- to restore the global invariants when cluster load shifts. In some cases, the ApplicationMaster can respond to fluctuations in resource availability without losing the work already completed by that task (MAPREDUCE-4584). Supplying it with this information would be helpful for overall cluster utilization [1]. To this end, we want to establish a protocol for the RM to ask the AM to release containers.
> [1] http://research.yahoo.com/files/yl-2012-003.pdf



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