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https://issues.apache.org/jira/browse/YARN-3319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14509470#comment-14509470
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Hudson commented on YARN-3319:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #7648 (See 
[https://builds.apache.org/job/Hadoop-trunk-Commit/7648/])
YARN-3319. Implement a FairOrderingPolicy. (Craig Welch via wangda) (wangda: 
rev 395205444e8a9ae6fc86f0a441e98486a775511a)
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/policy/TestFairOrderingPolicy.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java
* hadoop-yarn-project/hadoop-yarn/dev-support/findbugs-exclude.xml
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/policy/FairOrderingPolicy.java
* hadoop-yarn-project/CHANGES.txt
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/policy/CompoundComparator.java


> Implement a FairOrderingPolicy
> ------------------------------
>
>                 Key: YARN-3319
>                 URL: https://issues.apache.org/jira/browse/YARN-3319
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: scheduler
>            Reporter: Craig Welch
>            Assignee: Craig Welch
>             Fix For: 2.8.0
>
>         Attachments: YARN-3319.13.patch, YARN-3319.14.patch, 
> YARN-3319.17.patch, YARN-3319.35.patch, YARN-3319.39.patch, 
> YARN-3319.45.patch, YARN-3319.47.patch, YARN-3319.53.patch, 
> YARN-3319.58.patch, YARN-3319.70.patch, YARN-3319.71.patch, 
> YARN-3319.72.patch, YARN-3319.73.patch, YARN-3319.74.patch, YARN-3319.75.patch
>
>
> Implement a FairOrderingPolicy which prefers to allocate to 
> SchedulerProcesses with least current usage, very similar to the 
> FairScheduler's FairSharePolicy.  
> The Policy will offer allocations to applications in a queue in order of 
> least resources used, and preempt applications in reverse order (from most 
> resources used). This will include conditional support for sizeBasedWeight 
> style adjustment
> Optionally, based on a conditional configuration to enable sizeBasedWeight 
> (default false), an adjustment to boost larger applications (to offset the 
> natural preference for smaller applications) will adjust the resource usage 
> value based on demand, dividing it by the below value:
> Math.log1p(app memory demand) / Math.log(2);
> In cases where the above is indeterminate (two applications are equal after 
> this comparison), behavior falls back to comparison based on the application 
> id, which is generally lexically FIFO for that comparison



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