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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6194) Cluster capacity in SchedulingPolicy is updated only on allocation file reload
Date Wed, 22 Feb 2017 19:53:44 GMT

    [ https://issues.apache.org/jira/browse/YARN-6194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15879096#comment-15879096
] 

ASF GitHub Bot commented on YARN-6194:
--------------------------------------

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

    https://github.com/apache/hadoop/pull/196#discussion_r102555178
  
    --- Diff: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/policies/TestDominantResourceFairnessPolicy.java
---
    @@ -40,7 +43,10 @@
       private Comparator<Schedulable> createComparator(int clusterMem,
           int clusterCpu) {
         DominantResourceFairnessPolicy policy = new DominantResourceFairnessPolicy();
    -    policy.initialize(BuilderUtils.newResource(clusterMem, clusterCpu));
    +    FSContext fsContext = mock(FSContext.class);
    +    when(fsContext.getClusterResource()).
    +        thenReturn(BuilderUtils.newResource(clusterMem, clusterCpu));
    --- End diff --
    
    Let us use Resources.create instead of BuilterUtils.newInstance. 


> Cluster capacity in SchedulingPolicy is updated only on allocation file reload
> ------------------------------------------------------------------------------
>
>                 Key: YARN-6194
>                 URL: https://issues.apache.org/jira/browse/YARN-6194
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: fairscheduler
>    Affects Versions: 2.8.0
>            Reporter: Karthik Kambatla
>            Assignee: Yufei Gu
>
> Some of the {{SchedulingPolicy}} methods need cluster capacity which is set using {{#initialize}}
today. However, {{initialize()}} is called only on allocation reload. If nodes are added between
reloads, the cluster capacity is not considered until the next reload.



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