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From "yeqi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2020) observeOnly should be checked before any preemption computation started inside containerBasedPreemptOrKill() of ProportionalCapacityPreemptionPolicy.java
Date Tue, 06 May 2014 02:31:16 GMT

    [ https://issues.apache.org/jira/browse/YARN-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13990210#comment-13990210
] 

yeqi commented on YARN-2020:
----------------------------

Carlo Curino, thanks for your explaination.  You are right, observeOnly is useful for debugging
and it's meaningless if change it as I proposed. 
I will close this ticket. 

> observeOnly should be checked before any preemption computation started inside containerBasedPreemptOrKill()
of ProportionalCapacityPreemptionPolicy.java
> ---------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-2020
>                 URL: https://issues.apache.org/jira/browse/YARN-2020
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.4.0
>         Environment: all
>            Reporter: yeqi
>            Priority: Trivial
>             Fix For: 2.5.0
>
>         Attachments: YARN-2020.patch
>
>   Original Estimate: 1m
>  Remaining Estimate: 1m
>
> observeOnly should be checked in the very beginning of  ProportionalCapacityPreemptionPolicy.containerBasedPreemptOrKill(),
 so that to avoid unnecessary workload.



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