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From "Subru Krishnan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-3671) Integrate Federation services with ResourceManager
Date Mon, 29 Aug 2016 21:40:20 GMT

     [ https://issues.apache.org/jira/browse/YARN-3671?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Subru Krishnan updated YARN-3671:
    Attachment: YARN-3671-YARN-2915-v4.patch

bq. Here, the scheduler is passed in via reference. If the RM switches to standby and then
switches back to active, the scheduler object will be re-created and the reference will be
updated in RMContext, but the reference here won't be updated, which cause the scheduler object
here outdated? 

Good question [~jianhe]. The scheduler object will *not* be outdated as {{FederationStateStoreService}}
is an active service and the {{FederationStateStoreHeartbeat}} is initialized on it's _serviceStart_:
stateStoreHeartbeat = new FederationStateStoreHeartbeat(subClusterId,
        stateStoreClient, rmContext.getScheduler());

To double-check, I have updated the {{TestFederationRMStateStoreService}} with an explicit
transtion to standby and then back to active.

I have also renamed "state-store.heartbeat-interval" --> "state-store.heartbeat-interval-secs"
in v4 of the patch as you suggested.

> Integrate Federation services with ResourceManager
> --------------------------------------------------
>                 Key: YARN-3671
>                 URL: https://issues.apache.org/jira/browse/YARN-3671
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Subru Krishnan
>            Assignee: Subru Krishnan
>         Attachments: YARN-3671-YARN-2915-v1.patch, YARN-3671-YARN-2915-v2.patch, YARN-3671-YARN-2915-v3.patch,
> This JIRA proposes adding the ability to turn on Federation services like StateStore,
cluster membership heartbeat etc in the RM

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