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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3446) FairScheduler HeadRoom calculation should exclude nodes in the blacklist.
Date Tue, 15 Sep 2015 16:22:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-3446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14745674#comment-14745674
] 

Karthik Kambatla commented on YARN-3446:
----------------------------------------

[~zxu] - the patch doesn't apply any more. Could you please rebase it onto trunk? 

> FairScheduler HeadRoom calculation should exclude nodes in the blacklist.
> -------------------------------------------------------------------------
>
>                 Key: YARN-3446
>                 URL: https://issues.apache.org/jira/browse/YARN-3446
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>            Reporter: zhihai xu
>            Assignee: zhihai xu
>         Attachments: YARN-3446.000.patch, YARN-3446.001.patch
>
>
> FairScheduler HeadRoom calculation should exclude nodes in the blacklist.
> MRAppMaster does not preempt the reducers because for Reducer preemption calculation,
headRoom is considering blacklisted nodes. This makes jobs to hang forever(ResourceManager
does not assign any new containers on blacklisted nodes but availableResource AM get from
RM includes blacklisted nodes available resource).
> This issue is similar as YARN-1680 which is for Capacity Scheduler.



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