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https://issues.apache.org/jira/browse/YARN-2162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16135536#comment-16135536
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ASF GitHub Bot commented on YARN-2162:
--------------------------------------

Github user flyrain commented on a diff in the pull request:

    https://github.com/apache/hadoop/pull/261#discussion_r134296734
  
    --- Diff: 
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
 ---
    @@ -321,8 +310,7 @@ Resource getMaxResources(String queue) {
        * @param queue the target queue's name
        * @return the max allocation on this queue or null if not set
        */
    -  @VisibleForTesting
    -  Resource getMaxChildResources(String queue) {
    +  @VisibleForTesting ResourceConfiguration getMaxChildResources(String 
queue) {
    --- End diff --
    
    Will do.


> add ability in Fair Scheduler to optionally configure maxResources in terms 
> of percentage
> -----------------------------------------------------------------------------------------
>
>                 Key: YARN-2162
>                 URL: https://issues.apache.org/jira/browse/YARN-2162
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: fairscheduler, scheduler
>            Reporter: Ashwin Shankar
>            Assignee: Yufei Gu
>              Labels: scheduler
>         Attachments: YARN-2162.001.patch, YARN-2162.002.patch
>
>
> minResources and maxResources in fair scheduler configs are expressed in 
> terms of absolute numbers X mb, Y vcores. 
> As a result, when we expand or shrink our hadoop cluster, we need to 
> recalculate and change minResources/maxResources accordingly, which is pretty 
> inconvenient.
> We can circumvent this problem if we can optionally configure these 
> properties in terms of percentage of cluster capacity. 



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