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From "Chris Trezzo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2179) Initial cache manager structure and context
Date Mon, 29 Sep 2014 21:48:35 GMT

    [ https://issues.apache.org/jira/browse/YARN-2179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14152355#comment-14152355
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Chris Trezzo commented on YARN-2179:
------------------------------------

[~vinodkv] Mocking YarnClient seems to be tricky due to it being an AbstractService. Would
extending YarnClientImpl and only overriding methods I need to stub be a more reasonable approach?
For this approach I would need to make the serviceStart and serviceStop methods in YarnClientImpl
publicly visible for testing. It is still a little tricky due to the serviceStart and serviceStop
methods of YarnClientImpl using ClientRMProxy. That is originally why I decided to just create
a different dummy YarnClient implementation. Any thoughts on these alternative approaches,
or am I just missing an easy way to mock YarnClient (which is highly possible)?

> Initial cache manager structure and context
> -------------------------------------------
>
>                 Key: YARN-2179
>                 URL: https://issues.apache.org/jira/browse/YARN-2179
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Chris Trezzo
>            Assignee: Chris Trezzo
>         Attachments: YARN-2179-trunk-v1.patch, YARN-2179-trunk-v2.patch, YARN-2179-trunk-v3.patch,
YARN-2179-trunk-v4.patch, YARN-2179-trunk-v5.patch, YARN-2179-trunk-v6.patch, YARN-2179-trunk-v7.patch,
YARN-2179-trunk-v8.patch, YARN-2179-trunk-v9.patch
>
>
> Implement the initial shared cache manager structure and context. The SCMContext will
be used by a number of manager services (i.e. the backing store and the cleaner service).
The AppChecker is used to gather the currently running applications on SCM startup (necessary
for an scm that is backed by an in-memory store).



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