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https://issues.apache.org/jira/browse/YARN-5324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15380912#comment-15380912
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Carlo Curino commented on YARN-5324:
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This patch provides 3 simple implementation of {{RouterFederationPolicy}}:
# A uniform random choice among active subclusters
# A weighted random choice among active subclusters, where the weights in the
policy determine likelihood of picking a cluster (and =0 means actively
excluding a subcluster)
# A ordered priority among active subclusters, where the weights in the policy
determine the "cost" of picking a cluster. The policy always picks the
subcluster with the lowest weight.
> Stateless router policies implementation
> ----------------------------------------
>
> Key: YARN-5324
> URL: https://issues.apache.org/jira/browse/YARN-5324
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager, resourcemanager
> Reporter: Carlo Curino
> Assignee: Carlo Curino
> Attachments: YARN-5324.01.patch
>
>
> These are policies at the Router that do not require maintaing state across
> choices (e.g., weighted random).
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