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From "Botong Huang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6247) Share a single instance of SubClusterResolver instead of instantiating one per AM
Date Fri, 03 Mar 2017 05:47:45 GMT

    [ https://issues.apache.org/jira/browse/YARN-6247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15893774#comment-15893774
] 

Botong Huang commented on YARN-6247:
------------------------------------

Thanks [~subru] for the review! 

> Share a single instance of SubClusterResolver instead of instantiating one per AM
> ---------------------------------------------------------------------------------
>
>                 Key: YARN-6247
>                 URL: https://issues.apache.org/jira/browse/YARN-6247
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Botong Huang
>            Assignee: Botong Huang
>            Priority: Minor
>             Fix For: YARN-2915
>
>         Attachments: YARN-6247-YARN-2915.v1.patch, YARN-6247-YARN-2915.v2.patch, YARN-6247-YARN-2915.v3.patch,
YARN-6247-YARN-2915.v4.patch
>
>
> Add SubClusterResolver into FederationStateStoreFacade. Since the resolver might involve
some overhead (read file in the background, potentially periodically), it is good to put it
inside FederationStateStoreFacade singleton, so that only one instance will be created. 



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