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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:
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[~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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