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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6593) [API] Introduce Placement Constraint object
Date Thu, 20 Jul 2017 17:39:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16095049#comment-16095049
] 

Wangda Tan commented on YARN-6593:
----------------------------------

[~chris.douglas], 

bq.  Do we want to support users adding new transforms? If not, some of the implementation
details could be package-private.
I think we should not support users adding new transforms. 

bq. Wangda Tan: what are the semantics of updated constraints? ...
Yeah we missed it in our design doc, however I found it is very important otherwise we cannot
support complex placement request which need to be updated. 
Regarding to semantics, I prefer to apply to all containers placed subsequently, this is also
the closest behavior of existing YARN. We just need to verify updated placement request is
still valid, probably we don't need to restricted to some parameters.
What's your thoughts here? 

> [API] Introduce Placement Constraint object
> -------------------------------------------
>
>                 Key: YARN-6593
>                 URL: https://issues.apache.org/jira/browse/YARN-6593
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Konstantinos Karanasos
>            Assignee: Konstantinos Karanasos
>             Fix For: 3.0.0-alpha3
>
>         Attachments: YARN-6593.001.patch, YARN-6593.002.patch, YARN-6593.003.patch, YARN-6593.004.patch
>
>
> This JIRA introduces an object for defining placement constraints.



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