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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5079) [Umbrella] Native YARN framework layer for services and beyond
Date Thu, 12 May 2016 21:50:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-5079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15282120#comment-15282120
] 

Vinod Kumar Vavilapalli commented on YARN-5079:
-----------------------------------------------

Now thinking of solutions I laid down in the design doc for YARN-4692.

Slider was initially proposed as a separate project to learn about modeling services on top
of YARN in much faster cycles than the Hadoop project and we believe it served its goals.

Slider AM already handles a great deal of such functionality, and there’s more to come.
Assimilating the client, ApplicationMaster etc of an existing framework like Apache Slider
can serve this purpose really well. My early informal discussions about this with few Hadoop
and Slider community members yielded generally favourable feedback. More comments / feedback
appreciated on this proposal.

> [Umbrella] Native YARN framework layer for services and beyond
> --------------------------------------------------------------
>
>                 Key: YARN-5079
>                 URL: https://issues.apache.org/jira/browse/YARN-5079
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Vinod Kumar Vavilapalli
>
> (See overview doc at YARN-4692, modifying and copy-pasting some of the relevant pieces
and sub-section 3.3.1 to track the specific sub-item.)
> (This is a companion to YARN-4793 in our effort to simplify the entire story, but focusing
on APIs)
> So far, YARN by design has restricted itself to having a very low-­level API that can
support any type of application. Frameworks like Apache Hadoop MapReduce, Apache Tez, Apache
Spark, Apache REEF, Apache Twill, Apache Helix and others ended up exposing higher level APIs
that end­-users can directly leverage to build their applications on top of YARN. On the
services side, Apache Slider has done something similar.
> With our current attention on making services first­-class and simplified, it's time
to take a fresh look at how we can make Apache Hadoop YARN support services well out of the
box. Beyond the functionality that I outlined in the previous sections in the doc on how NodeManagers
can be enhanced to help services, the biggest missing piece is the framework itself. There
is a lot of very important functionality that a services' framework can own together with
YARN in executing services end­-to­-end.
> In this JIRA I propose we look at having a native Apache Hadoop framework for running
services natively on YARN.



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