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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3434) Interaction between reservations and userlimit can result in significant ULF violation
Date Fri, 24 Apr 2015 13:42:49 GMT

    [ https://issues.apache.org/jira/browse/YARN-3434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14511069#comment-14511069
] 

Hudson commented on YARN-3434:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #2123 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/2123/])
YARN-3434. Interaction between reservations and userlimit can result in significant ULF violation
(tgraves: rev 189a63a719c63b67a1783a280bfc2f72dcb55277)
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/AbstractCSQueue.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/ResourceLimits.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestReservations.java
* hadoop-yarn-project/CHANGES.txt


> Interaction between reservations and userlimit can result in significant ULF violation
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-3434
>                 URL: https://issues.apache.org/jira/browse/YARN-3434
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.6.0
>            Reporter: Thomas Graves
>            Assignee: Thomas Graves
>             Fix For: 2.8.0
>
>         Attachments: YARN-3434.patch, YARN-3434.patch, YARN-3434.patch, YARN-3434.patch,
YARN-3434.patch, YARN-3434.patch, YARN-3434.patch
>
>
> ULF was set to 1.0
> User was able to consume 1.4X queue capacity.
> It looks like when this application launched, it reserved about 1000 containers, each
8G each, within about 5 seconds. I think this allowed the logic in assignToUser() to allow
the userlimit to be surpassed.



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