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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1983) Support heterogeneous container types at runtime on YARN
Date Mon, 02 Feb 2015 07:49:37 GMT

    [ https://issues.apache.org/jira/browse/YARN-1983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14300975#comment-14300975
] 

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

As in YARN-2718: can't this be implemented as a composite CE, rather than changing the CLC?
Managing versions of the CE, selecting a compatible CE, matching in the scheduler, etc. will
require more than the classname to match. Configuring multiple CEs covers some useful cases,
but if a composite CE is sufficient to experiment, then we can avoid a kludge in the protocol.

> 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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