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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3539) Compatibility doc to state that ATS v1 is a stable REST API
Date Wed, 29 Apr 2015 21:39:07 GMT

    [ https://issues.apache.org/jira/browse/YARN-3539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14520312#comment-14520312
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Vinod Kumar Vavilapalli commented on YARN-3539:
-----------------------------------------------

bq. So I'm not sure if it's good timeline now, as we foresee in the near future, we're going
to be upgraded to ATS v2, which may significantly refurnish the APIs.
How about we simply say that people can continue to run the v1 Timeline Service (Single server
backed by LevelDB) beyond Timeline Service next-gen? That way, older installations and apps
can continue to use the old APIs, and the new APIs do not need to take the unknown burden
of making the old APIs work on the newer framework.

> Compatibility doc to state that ATS v1 is a stable REST API
> -----------------------------------------------------------
>
>                 Key: YARN-3539
>                 URL: https://issues.apache.org/jira/browse/YARN-3539
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: documentation
>    Affects Versions: 2.7.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: HADOOP-11826-001.patch, HADOOP-11826-002.patch, YARN-3539-003.patch,
YARN-3539-004.patch
>
>
> The ATS v2 discussion and YARN-2423 have raised the question: "how stable are the ATSv1
APIs"?
> The existing compatibility document actually states that the History Server is [a stable
REST API|http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/Compatibility.html#REST_APIs],
which effectively means that ATSv1 has already been declared as a stable API.
> Clarify this by patching the compatibility document appropriately



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