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https://issues.apache.org/jira/browse/YARN-8013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16423400#comment-16423400
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Weiwei Yang commented on YARN-8013:
-----------------------------------
Hi [~kkaranasos]
Thanks, I've fixed the checkstyle issues in v7 patch, just uploaded. The
failing UT \{{TestIncreaseAllocationExpirer}} is not caused by this patch, it
runs fine on my laptop (looks like an intermittent failure).
> Support APP-TAG namespace for allocation tags
> ---------------------------------------------
>
> Key: YARN-8013
> URL: https://issues.apache.org/jira/browse/YARN-8013
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Priority: Major
> Attachments: YARN-8013.001.patch, YARN-8013.002.patch,
> YARN-8013.003.patch, YARN-8013.004.patch, YARN-8013.005.patch,
> YARN-8013.006.patch
>
>
> YARN-1461 adds *Application Tag* concept to Yarn applications, user is able
> to annotate application with multiple tags to classify apps. We can leverage
> this to represent a namespace for a certain group of apps. So instead of
> calling *app-label*, propose to call it *app-tag*.
> A typical use case is,
> There are a lot of TF jobs running on Yarn, and some of them are consuming
> resources heavily. So we want to limit number of PS on each node for such BIG
> players but ignore those SMALL ones. To achieve this, we can do following
> steps:
> # Add application tag "big-tf" to these big TF jobs
> # For each PS request, we add "ps" source tag and map it to constraint
> "{color:#d04437}notin, node, tensorflow/ps{color}" or
> "{color:#d04437}cardinality, node, tensorflow/ps{color}{color:#d04437}, 0,
> 2{color}" for finer grained controls.
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