[jira] [Created] (YARN-6724) Add ability to blacklist sub-clusters when invoking Routing policies

["Subru Krishnan (JIRA)" <ji...@apache.org>]

Subru Krishnan created YARN-6724:
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             Summary: Add ability to blacklist sub-clusters when invoking Routing policies
                 Key: YARN-6724
                 URL: https://issues.apache.org/jira/browse/YARN-6724
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: router
            Reporter: Subru Krishnan
            Assignee: Giovanni Matteo Fumarola


The {{Router}} service invokes the policy to determine the next sub-cluster to route the client request to. Since the current policy implementations are stateless, we need the ability to pass in blacklisted sub-clusters (which failed previously) to prevent selection of non-responsive sub-clusters.  



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