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https://issues.apache.org/jira/browse/YARN-2394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14121541#comment-14121541
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Hudson commented on YARN-2394:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1886 (See 
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1886/])
YARN-2394. FairScheduler: Configure fairSharePreemptionThreshold per queue. 
(Wei Yan via kasha) (kasha: rev 1dcaba9a7aa27f7ca4ba693e3abb56ab3c59c8a7)
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestAllocationFileLoaderService.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairScheduler.java
* hadoop-yarn-project/CHANGES.txt
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestFairScheduler.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/QueueManager.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/FairScheduler.apt.vm
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSLeafQueue.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSParentQueue.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/AllocationConfiguration.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSQueue.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/AllocationFileLoaderService.java
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestFSLeafQueue.java


> FairScheduler: Configure fairSharePreemptionThreshold per queue
> ---------------------------------------------------------------
>
>                 Key: YARN-2394
>                 URL: https://issues.apache.org/jira/browse/YARN-2394
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: fairscheduler
>            Reporter: Ashwin Shankar
>            Assignee: Wei Yan
>             Fix For: 2.6.0
>
>         Attachments: YARN-2394-1.patch, YARN-2394-2.patch, YARN-2394-3.patch, 
> YARN-2394-4.patch, YARN-2394-5.patch, YARN-2394-6.patch, YARN-2394-7.patch
>
>
> Preemption based on fair share starvation happens when usage of a queue is 
> less than 50% of its fair share. This 50% is hardcoded. We'd like to make 
> this configurable on a per queue basis, so that we can choose the threshold 
> at which we want to preempt. Calling this config 
> "fairSharePreemptionThreshold". 



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