Hudson commented on YARN-3547:

SUCCESS: Integrated in Hadoop-Hdfs-trunk #2141 (See 
YARN-3547. FairScheduler: Apps that have no resource demand should not 
participate scheduling. (Xianyin Xin via kasha) (kasha: rev 
* hadoop-yarn-project/CHANGES.txt

> FairScheduler: Apps that have no resource demand should not participate 
> scheduling
> ----------------------------------------------------------------------------------
>                 Key: YARN-3547
>                 URL: https://issues.apache.org/jira/browse/YARN-3547
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: fairscheduler
>            Reporter: Xianyin Xin
>            Assignee: Xianyin Xin
>             Fix For: 2.8.0
>         Attachments: YARN-3547.001.patch, YARN-3547.002.patch, 
> YARN-3547.003.patch, YARN-3547.004.patch, YARN-3547.005.patch, 
> YARN-3547.006.patch
> At present, all of the 'running' apps participate the scheduling process, 
> however, most of them may have no resource demand on a production cluster, as 
> the app's status is running other than waiting for resource at the most of 
> the app's lifetime. It's not a wise way we sort all the 'running' apps and 
> try to fulfill them, especially on a large-scale cluster which has heavy 
> scheduling load. 

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