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Posted to mapreduce-issues@hadoop.apache.org by "Arun C Murthy (Assigned) (JIRA)" <ji...@apache.org> on 2011/12/13 23:17:30 UTC

[jira] [Assigned] (MAPREDUCE-3399) ContainerLocalizer should request new resources after completing the current one

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy reassigned MAPREDUCE-3399:
----------------------------------------

    Assignee: Siddharth Seth
    
> ContainerLocalizer should request new resources after completing the current one
> --------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3399
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3399
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mrv2, nodemanager
>    Affects Versions: 0.23.0
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>            Priority: Blocker
>
> Currently, the ContainerLocalizer to NM heartbeats to the NM every second. Not very significant, but this causes a ~4second delay in jobs (job jar, splits, etc). Instead, it should heartbeat to ask for additional resources to localize as soon as the previous one is localzied. There's already a TODO in the ContainerLocalizer for this.

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