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From "Zhijie Shen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3039) [Aggregator wireup] Implement ATS writer service discovery
Date Tue, 24 Feb 2015 01:16:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-3039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14334206#comment-14334206
] 

Zhijie Shen commented on YARN-3039:
-----------------------------------

One addition issue related the rm state store: calling it in the update transition may break
the app recovery. The current state instead of the final state will be written into the store.
If RM stops and restarts at this moment, this app can't be recovered properly.

> [Aggregator wireup] Implement ATS writer service discovery
> ----------------------------------------------------------
>
>                 Key: YARN-3039
>                 URL: https://issues.apache.org/jira/browse/YARN-3039
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Sangjin Lee
>            Assignee: Junping Du
>         Attachments: Service Binding for applicationaggregator of ATS (draft).pdf, YARN-3039-no-test.patch
>
>
> Per design in YARN-2928, implement ATS writer service discovery. This is essential for
off-node clients to send writes to the right ATS writer. This should also handle the case
of AM failures.



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