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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7892) Revisit NodeAttribute class structure
Date Mon, 07 May 2018 23:39:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16466618#comment-16466618
] 

Wangda Tan commented on YARN-7892:
----------------------------------

Thanks [~Naganarasimha], For id(identifier) and key, I think they're interchangeable in many
scenarios such as entity.id / entity.key. 

However, for the map-like data (1 => 1 mapping), for example map / environment-variable,
etc. The it should be named as "key" instead of "id", you can check {{org.apache.hadoop.yarn.api.resource.PlacementConstraint.TargetExpression}}
as an example.

> Revisit NodeAttribute class structure
> -------------------------------------
>
>                 Key: YARN-7892
>                 URL: https://issues.apache.org/jira/browse/YARN-7892
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Naganarasimha G R
>            Assignee: Naganarasimha G R
>            Priority: Major
>         Attachments: YARN-7892-YARN-3409.001.patch, YARN-7892-YARN-3409.002.patch, YARN-7892-YARN-3409.003.WIP.patch,
YARN-7892-YARN-3409.003.patch, YARN-7892-YARN-3409.004.patch, YARN-7892-YARN-3409.005.patch,
YARN-7892-YARN-3409.006.patch
>
>
> In the existing structure, we had kept the type and value along with the attribute which
would create confusion to the user to understand the APIs as they would not be clear as to
what needs to be sent for type and value while fetching the mappings for node(s).
> As well as equals will not make sense when we compare only for prefix and name where
as values for them might be different.  



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