[jira] [Commented] (YARN-1983) Support heterogeneous container types at runtime on YARN

["Chris Douglas (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-1983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14584272#comment-14584272 ] 

Chris Douglas commented on YARN-1983:
-------------------------------------

(sorry for the delayed reply; missed this)

bq. I was proposing we continue the same without adding a new CLC field. Are we both saying the same thing then?

Yeah, I think we agree. We don't need to extend the CLC definition for this use case, because it's less invasive to add a composite CE that can inspect the CLC and demux on a set of rules.

I scanned the patch on YARN-1964, and maybe I'm being dense but I couldn't find the demux. It does some validation using patterns...

> Support heterogeneous container types at runtime on YARN
> --------------------------------------------------------
>
>                 Key: YARN-1983
>                 URL: https://issues.apache.org/jira/browse/YARN-1983
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Junping Du
>         Attachments: YARN-1983.2.patch, YARN-1983.patch
>
>
> Different container types (default, LXC, docker, VM box, etc.) have different semantics on isolation of security, namespace/env, performance, etc.
> Per discussions in YARN-1964, we have some good thoughts on supporting different types of containers running on YARN and specified by application at runtime which largely enhance YARN's flexibility to meet heterogenous app's requirement on isolation at runtime.



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