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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2882) Introducing container types
Date Thu, 05 Nov 2015 01:18:27 GMT

    [ https://issues.apache.org/jira/browse/YARN-2882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14990881#comment-14990881

Arun Suresh commented on YARN-2882:

Thanks for the patch [~kkaranasos]. The patch looks mostly good. Few minor nits :
# I feel that instead of adding another *newInstance* method in *ResourceRequest* class, maybe
we replace this with some sort of builder pattern. for eg : something like so :
ReseourceRequest req = new ResourceRequestBuilder().setPripority(pri).setHostName(hostname).setContainerType(QUEUEABLE)...build();
(I understand.. this might impact other parts of the code, but I believe it would make it
more extensible in the future.)
# in the *yarn_protos.proto* file, can we add *container_type* after the *node_label_expression*
field (I feel newer fields should come later)

Also, looks like the patch does not apply correctly anymore, can you please rebase ?

> Introducing container types
> ---------------------------
>                 Key: YARN-2882
>                 URL: https://issues.apache.org/jira/browse/YARN-2882
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Konstantinos Karanasos
>            Assignee: Konstantinos Karanasos
>         Attachments: yarn-2882.patch
> This JIRA introduces the notion of container types.
> We propose two initial types of containers: guaranteed-start and queueable containers.
> Guaranteed-start are the existing containers, which are allocated by the central RM and
are instantaneously started, once allocated.
> Queueable is a new type of container, which allows containers to be queued in the NM,
thus their execution may be arbitrarily delayed.

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