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From "Konstantinos Karanasos (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6599) Support rich placement constraints in scheduler
Date Sat, 06 Jan 2018 20:25:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16314893#comment-16314893
] 

Konstantinos Karanasos commented on YARN-6599:
----------------------------------------------

[~wangda] and [~asuresh]:
* I think we should not introduce node partitions in this JIRA. Not only for the size of the
patch, but because semantically it belongs to a different JIRA.
In general, this is a complicated feature we are adding. Let's get a first version with node
and rack, and once we are convinced this is working, we can add the node partitions, after
we agree on how we do this properly and in a clean way.
* What we did in YARN-7613 is to restrict the scope of a constraint to the application that
is defining it for the first version, so that we do not have to deal with prefixes. Again,
we will eventually need something like this, but I don't think it should be introduced in
this JIRA.
* I can be convinced to remove the SELF target, but let's discuss before taking action on
this. I need to think a bit more about it -- it might not be just syntactic sugar given have
decided to not include the source tags in the constraint itself.

I think we should chat offline to converge faster on this couple of things.

> Support rich placement constraints in scheduler
> -----------------------------------------------
>
>                 Key: YARN-6599
>                 URL: https://issues.apache.org/jira/browse/YARN-6599
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>         Attachments: YARN-6599-YARN-6592.003.patch, YARN-6599-YARN-6592.004.patch, YARN-6599-YARN-6592.005.patch,
YARN-6599-YARN-6592.006.patch, YARN-6599-YARN-6592.007.patch, YARN-6599-YARN-6592.008.patch,
YARN-6599-YARN-6592.wip.002.patch, YARN-6599.poc.001.patch
>
>




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