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From "Robert Kanter (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4408) NodeManager still reports negative running containers
Date Wed, 02 Dec 2015 00:51:10 GMT

     [ https://issues.apache.org/jira/browse/YARN-4408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Kanter updated YARN-4408:
--------------------------------
    Attachment: YARN-4408.001.patch

The patch adds the missing check.  It also adds a unit test for this case, and for one of
the other cases, which was missing.

> NodeManager still reports negative running containers
> -----------------------------------------------------
>
>                 Key: YARN-4408
>                 URL: https://issues.apache.org/jira/browse/YARN-4408
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.4.0
>            Reporter: Robert Kanter
>            Assignee: Robert Kanter
>         Attachments: YARN-4408.001.patch
>
>
> YARN-1697 fixed a problem where the NodeManager metrics could report a negative number
of running containers.  However, it missed a rare case where this can still happen.
> YARN-1697 added a flag to indicate if the container was actually launched ({{LOCALIZED}}
to {{RUNNING}}) or not ({{LOCALIZED}} to {{KILLING}}), which is then checked when transitioning
from {{CONTAINER_CLEANEDUP_AFTER_KILL}} to {{DONE}} and {{EXITED_WITH_FAILURE}} to {{DONE}}
to only decrement the gauge if we actually ran the container and incremented the gauge . 
However, this flag is not checked while transitioning from {{EXITED_WITH_SUCCESS}} to {{DONE}}.



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