[
https://issues.apache.org/jira/browse/YARN-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14263272#comment-14263272
]
Kannan Rajah commented on YARN-796:
-----------------------------------
No, I did mean fair scheduler because that is the one having the load balancing
logic. It does this by sorting the available node capacity and iterating over
it one at a time. So with label based scheduling, the node with maximum
available capacity need not be OK for the job. I agree that it adds
complexity. In fact, we need to add an API to the Scheduler interface that does
not take a Node as input. I will draft a proposal and run it by you to see if
that makes sense. I will also check with Yulia about YARN-2497 and see if this
can be done as part of that.
> Allow for (admin) labels on nodes and resource-requests
> -------------------------------------------------------
>
> Key: YARN-796
> URL: https://issues.apache.org/jira/browse/YARN-796
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: 2.4.1
> Reporter: Arun C Murthy
> Assignee: Wangda Tan
> Attachments: LabelBasedScheduling.pdf,
> Node-labels-Requirements-Design-doc-V1.pdf,
> Node-labels-Requirements-Design-doc-V2.pdf, YARN-796-Diagram.pdf,
> YARN-796.node-label.consolidate.1.patch,
> YARN-796.node-label.consolidate.10.patch,
> YARN-796.node-label.consolidate.11.patch,
> YARN-796.node-label.consolidate.12.patch,
> YARN-796.node-label.consolidate.13.patch,
> YARN-796.node-label.consolidate.14.patch,
> YARN-796.node-label.consolidate.2.patch,
> YARN-796.node-label.consolidate.3.patch,
> YARN-796.node-label.consolidate.4.patch,
> YARN-796.node-label.consolidate.5.patch,
> YARN-796.node-label.consolidate.6.patch,
> YARN-796.node-label.consolidate.7.patch,
> YARN-796.node-label.consolidate.8.patch, YARN-796.node-label.demo.patch.1,
> YARN-796.patch, YARN-796.patch4
>
>
> It will be useful for admins to specify labels for nodes. Examples of labels
> are OS, processor architecture etc.
> We should expose these labels and allow applications to specify labels on
> resource-requests.
> Obviously we need to support admin operations on adding/removing node labels.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
