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https://issues.apache.org/jira/browse/YARN-1001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13769277#comment-13769277
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Zhijie Shen commented on YARN-1001:
-----------------------------------
Vinod, thanks for committing the patch. In addition to the new feature we added
in this jira, some additional thought came into my mind:
1. RMContext store all the applications in one map. This data structure is not
friendly to GetApps and GetAppStatistics, which need to go through the whole
collection. Given some regular query criteria, such as states and
applicationTypes, it would be good if we can somehow index the apps according
to these criteria. Therefore, we can speed up the two APIs, maybe also some
other operations on the app collection of RMContext.
2. Now web API ignores the case when matching the applicationType. IMHO,
ApplicationClientProtocol should have the same behavior. Moreover, I think it's
good to define criteria of naming an applicationType, for example, letter and
number only, case insensitive and etc.
Thoughts?
> YARN should provide per application-type and state statistics
> -------------------------------------------------------------
>
> Key: YARN-1001
> URL: https://issues.apache.org/jira/browse/YARN-1001
> Project: Hadoop YARN
> Issue Type: Task
> Components: api
> Affects Versions: 2.1.0-beta
> Reporter: Srimanth Gunturi
> Assignee: Zhijie Shen
> Priority: Blocker
> Fix For: 2.1.1-beta
>
> Attachments: YARN-1001.1.patch, YARN-1001.2.patch, YARN-1001.3.patch,
> YARN-1001.4.patch, YARN-1001.5.patch, YARN-1001.6.patch, YARN-1001.7.patch
>
>
> In Ambari we plan to show for MR2 the number of applications finished,
> running, waiting, etc. It would be efficient if YARN could provide per
> application-type and state aggregated counts.
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