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From "Shiwei Guo (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-3933) Resources(both core and memory) are being negative
Date Mon, 24 Aug 2015 12:15:46 GMT

     [ https://issues.apache.org/jira/browse/YARN-3933?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shiwei Guo updated YARN-3933:
-----------------------------
    Attachment: patch.BUGFIX-JIRA-YARN-3933.txt

See this comment: https://issues.apache.org/jira/browse/YARN-3933?focusedCommentId=14709146&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14709146

> Resources(both core and memory) are being negative
> --------------------------------------------------
>
>                 Key: YARN-3933
>                 URL: https://issues.apache.org/jira/browse/YARN-3933
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.5.2
>            Reporter: Lavkesh Lahngir
>            Assignee: Lavkesh Lahngir
>              Labels: patch
>         Attachments: patch.BUGFIX-JIRA-YARN-3933.txt
>
>
> 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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