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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1101) Active nodes can be decremented below 0
Date Thu, 29 Aug 2013 14:45:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-1101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13753672#comment-13753672
] 

Hudson commented on YARN-1101:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1533 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1533/])
YARN-1101. Active nodes can be decremented below 0 (Robert Parker via tgraves_ (tgraves: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1518384)
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmnode/RMNodeImpl.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMNodeTransitions.java

                
> Active nodes can be decremented below 0
> ---------------------------------------
>
>                 Key: YARN-1101
>                 URL: https://issues.apache.org/jira/browse/YARN-1101
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 3.0.0, 0.23.9, 2.0.6-alpha
>            Reporter: Robert Parker
>            Assignee: Robert Parker
>             Fix For: 3.0.0, 2.3.0, 0.23.10, 2.1.1-beta
>
>         Attachments: YARN-1101_b0.23_v1.patch, YARN-1101_v1.patch
>
>
> The issue is in RMNodeImpl where both RUNNING and UNHEALTHY states that transition to
a deactive state (LOST, DECOMMISSIONED, REBOOTED) use the same DeactivateNodeTransition class.
 The DeactivateNodeTransition class naturally decrements the active node, however the in cases
where the node has transition to UNHEALTHY the active count has already been decremented.

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