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https://issues.apache.org/jira/browse/YARN-3933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15864332#comment-15864332
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Hudson commented on YARN-3933:
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ABORTED: Integrated in Jenkins build Hadoop-trunk-Commit #11240 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/11240/])
YARN-3933. FairScheduler: Multiple calls to completedContainer are not (kasha:
rev 646c6d6509f515b1373288869fb92807fa2ddc9b)
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSAppAttempt.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestFairScheduler.java
> FairScheduler: Multiple calls to completedContainer are not safe
> ----------------------------------------------------------------
>
> Key: YARN-3933
> URL: https://issues.apache.org/jira/browse/YARN-3933
> Project: Hadoop YARN
> Issue Type: Bug
> Components: fairscheduler
> Affects Versions: 2.7.1
> Reporter: Lavkesh Lahngir
> Assignee: Shiwei Guo
> Labels: oct16-medium
> Fix For: 2.8.0, 3.0.0-alpha3
>
> Attachments: YARN-3933.001.patch, YARN-3933.002.patch,
> YARN-3933.003.patch, YARN-3933.004.patch, YARN-3933.005.patch,
> YARN-3933.006.patch, yarn-3933-branch-2.8.patch
>
>
> In our cluster we are seeing available memory and cores being negative.
> Initial inspection:
> Scenario no. 1:
> In capacity scheduler the method allocateContainersToNode() checks if
> there are excess reservation of containers for an application, and they are
> no longer needed then it calls queue.completedContainer() which causes
> resources being negative. And they were never assigned in the first place.
> I am still looking through the code. Can somebody suggest how to simulate
> excess containers assignments ?
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