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From "Chun Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1983) Support heterogeneous container types at runtime on YARN
Date Thu, 05 Feb 2015 14:17:37 GMT

    [ https://issues.apache.org/jira/browse/YARN-1983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14307247#comment-14307247
] 

Chun Chen commented on YARN-1983:
---------------------------------

Thanks for the comments, [~vinodkv] [~chris.douglas].
Do you mean we can simply use NM_DOCKER_CONTAINER_EXECUTOR_IMAGE_NAME env to identify container
types? IMHO, users can implement a custom ${yarn.nodemanager.container-executor.class} for
their own scenarios currently,  what if they want to use both LinuxCE and their owner CE at
runtime? I think NM_DOCKER_CONTAINER_EXECUTOR_IMAGE_NAME is not enough to distinguish these
different container types. 
Besides, based on my proposal, if users don't want to use DockerCE, they don't need to change
any configuration.
I think my current patch is intrusive indeed but more general, right?

> 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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