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https://issues.apache.org/jira/browse/YARN-2475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14159154#comment-14159154
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Hudson commented on YARN-2475:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1916 (See 
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1916/])
YARN-2475. Logic for responding to capacity drops for the ReservationSystem. 
Contributed by Carlo Curino and Subru Krishnan. (cdouglas: rev 
1c6950354f3c35a7824770dc251d5aec3be4876a)
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestSimpleCapacityReplanner.java
* YARN-1051-CHANGES.txt
* 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/SimpleCapacityReplanner.java


> ReservationSystem: replan upon capacity reduction
> -------------------------------------------------
>
>                 Key: YARN-2475
>                 URL: https://issues.apache.org/jira/browse/YARN-2475
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Carlo Curino
>            Assignee: Carlo Curino
>         Attachments: YARN-2475.patch, YARN-2475.patch, YARN-2475.patch
>
>
> In the context of YARN-1051, if capacity of the cluster drops significantly 
> upon machine failures we need to trigger a reorganization of the planned 
> reservations. As reservations are "absolute" it is possible that they will 
> not all fit, and some need to be rejected a-posteriori.  



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