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From "Naganarasimha G R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2495) Allow admin specify labels from each NM (Distributed configuration)
Date Fri, 20 Feb 2015 19:06:14 GMT

    [ https://issues.apache.org/jira/browse/YARN-2495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14329376#comment-14329376
] 

Naganarasimha G R commented on YARN-2495:
-----------------------------------------

Hi [~wangda],
Thanks for discussing and summarizing this, few points to discuss:
# YARN-2923 (configuration based NodeLabelProviderService), what is the scope of this jira
as its again one more classification under {{distributed}} ? whether is it req? 
# Apart from the Vinod's suggestion, i would like to add one more change : In some jiras we
were discussing to have fail fast approach i.e. in our case if we configure script based distributed
configurations and the script file doesn't exist, rights not sufficient etc.. then NM should
fail to start.
# yarn-2980 is mostly just moving NodeHealthScriptRunner to HadoopCommon and the code in it
differs a lot than what we req, if  you remember earlier i had refactored that code and make
it reusable for our scenario but you had suggested not to touch the existing NodeHealthScriptRunner
and  to make ScriptBasedNodeLabelsProvider similar NodeHealthScript serving the needs of Node
labels.
# Earlier target version was mentioned as 2.6, do we modify it to 2.7 or 2.8?



> Allow admin specify labels from each NM (Distributed configuration)
> -------------------------------------------------------------------
>
>                 Key: YARN-2495
>                 URL: https://issues.apache.org/jira/browse/YARN-2495
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Wangda Tan
>            Assignee: Naganarasimha G R
>         Attachments: YARN-2495.20141023-1.patch, YARN-2495.20141024-1.patch, YARN-2495.20141030-1.patch,
YARN-2495.20141031-1.patch, YARN-2495.20141119-1.patch, YARN-2495.20141126-1.patch, YARN-2495.20141204-1.patch,
YARN-2495.20141208-1.patch, YARN-2495_20141022.1.patch
>
>
> Target of this JIRA is to allow admin specify labels in each NM, this covers
> - User can set labels in each NM (by setting yarn-site.xml (YARN-2923) or using script
suggested by [~aw] (YARN-2729) )
> - NM will send labels to RM via ResourceTracker API
> - RM will set labels in NodeLabelManager when NM register/update labels



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