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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1564) add some basic workflow YARN services
Date Thu, 07 May 2015 09:50:01 GMT

    [ https://issues.apache.org/jira/browse/YARN-1564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14532354#comment-14532354
] 

Steve Loughran commented on YARN-1564:
--------------------------------------

Sync on AtomicBool warnings are spurious; code is simply using the (final) objects as something
to wait/notify off to indicate status updates within the atomic values themselves. Nothing
wrong with that —avoids having a separate object, and makes it obvious what things are waiting
on. Presumably the check is there for people who don't know what they are doing.

> add some basic workflow YARN services
> -------------------------------------
>
>                 Key: YARN-1564
>                 URL: https://issues.apache.org/jira/browse/YARN-1564
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: api
>    Affects Versions: 2.4.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>         Attachments: YARN-1564-001.patch, YARN-1564-002.patch
>
>   Original Estimate: 24h
>          Time Spent: 48h
>  Remaining Estimate: 0h
>
> I've been using some alternative composite services to help build workflows of process
execution in a YARN AM.
> They and their tests could be moved in YARN for the use by others -this would make it
easier to build aggregate services in an AM



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