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From "Kuhu Shukla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4413) Nodes in the includes list should not be listed as decommissioned in the UI
Date Mon, 07 Dec 2015 17:48:11 GMT

    [ https://issues.apache.org/jira/browse/YARN-4413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15045329#comment-15045329

Kuhu Shukla commented on YARN-4413:


Also, YARN-4386 would still be needed since currently we are looking for DECOMMISSIONED nodes
in list returned by getRMNodes() which does not contain nodes in that state. Such nodes are
part of getInactiveRMNodes list. So the change would still be needed even if we decide to
add transition from DECOMM to RECOMM or not. 

I also had a question about the DECOMM to RECOMM transition and please pardon any naivety.
If we transition a node which is not running NM process any more since its was DECOMM-ed and
would then be SHUTDOWN, how does a RECOMM event help this node, unless we decide to start
the NM process? Am I missing something here? Appreciate any comments.

> Nodes in the includes list should not be listed as decommissioned in the UI
> ---------------------------------------------------------------------------
>                 Key: YARN-4413
>                 URL: https://issues.apache.org/jira/browse/YARN-4413
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.7.1
>            Reporter: Daniel Templeton
>            Assignee: Daniel Templeton
>         Attachments: YARN-4413.001.patch
> If I decommission a node and then move it from the excludes list back to the includes
list, but I don't restart the node, the node will still be listed by the web UI as decomissioned
until either the NM or RM is restarted.  Ideally, removing the node from the excludes list
and putting it back into the includes list should cause the node to be reported as shutdown
> CC [~kshukla]

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