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https://issues.apache.org/jira/browse/YARN-6686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16768763#comment-16768763
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Anthony Hsu commented on YARN-6686:
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Hi [~csexz],
I like your proposal of using <from> and <to>. I have one suggestion. Instead
of having separate <getParams> and <updateParams>, I think everything should be
an <updateParams> (<getParams> to me sounds like it's a read-only request, not
an update request).
* If <value> just contains text, then it's a complete replacement.
* If <value> has <from> and <to> children, then it's an addition, removal, or
update
||Operation|| <from>||<to>||Description/Notes||
|Addition|(empty)|u:<user1>:<queue1>,u:<user2>:<queue2>,...|Adds the mappings
u:<user1>:<queue1>,u:<user2>:<queue2>,... |
|Removal|u:<user1>:<queue1>,u:<user2>:<queue2>,...|(empty)|Removes the mappings
u:<user1>:<queue1>,u:<user2>:<queue2>,...|
|Update|u:<user1>:<queue1>,u:<user2>:<queue2>,...|u:<user1>:<queue1'>,u:<user2>:<queue2'>,...|Updates
the mappings for users <user1>, <user2>, ... from <queue1>, <queue2>, ... to
<queue1'>, <queue2'>, ...
The <from> and <to> should contain the same number of items.|
> Support for adding and removing queue mappings
> ----------------------------------------------
>
> Key: YARN-6686
> URL: https://issues.apache.org/jira/browse/YARN-6686
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Jonathan Hung
> Assignee: Jonathan Hung
> Priority: Major
> Attachments: YARN-6686-YARN-5734.001.patch
>
>
> Right now capacity scheduler uses UserGroupMappingPlacementRule to determine
> queue mappings. This rule stores mappings in
> {{yarn.scheduler.capacity.queue-mappings}}. For users with a large number of
> mappings, adding or removing queue mappings becomes infeasible.
> Need to come up with a way to add/remove individual mappings, for any/all
> different configured placement rules.
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