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From "Min Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2048) List all of the containers of an application from the yarn web
Date Tue, 13 May 2014 06:24:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-2048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13996126#comment-13996126
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Min Zhou commented on YARN-2048:
--------------------------------

[~zjshen] Currently, the only implementation of ApplcationContext is ApplicationHistoryManagerImpl,
which retrieves containers information from history store. 
Quesions:
# How do you fetch the containers info from a historyserver and display it on the RM web?

# If the information is from history store, seems RM won't get that kind of info until the
application is done? Sometimes user's application might be a long-live application, never
finish unless user kill it.
# Seems the only way providing containers info to RM is to maintain a list in RMAppAttempImpl,
which was my way as well.

Min

> List all of the containers of an application from the yarn web
> --------------------------------------------------------------
>
>                 Key: YARN-2048
>                 URL: https://issues.apache.org/jira/browse/YARN-2048
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager, webapp
>    Affects Versions: 2.3.0, 2.4.0, 2.5.0
>            Reporter: Min Zhou
>         Attachments: YARN-2048-trunk-v1.patch
>
>
> Currently, Yarn haven't provide a way to list all of the containers of an application
from its web. This kind of information is needed by the application user. They can conveniently
know how many containers their applications already acquired as well as which nodes those
containers were launched on.  They also want to view the logs of each container of an application.
> One approach is maintain a container list in RMAppImpl and expose this info to Application
page. I will submit a patch soon



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