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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4091) Add REST API to retrieve scheduler activity
Date Wed, 07 Sep 2016 23:55:21 GMT

     [ https://issues.apache.org/jira/browse/YARN-4091?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wangda Tan updated YARN-4091:
-----------------------------
    Attachment: YARN-4091-branch-2.001.patch

Attached patch for branch-2, it will be good to put to branch-2 for better debugability and
less divergences between trunk and branch-2.

> Add REST API to retrieve scheduler activity
> -------------------------------------------
>
>                 Key: YARN-4091
>                 URL: https://issues.apache.org/jira/browse/YARN-4091
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacity scheduler, resourcemanager
>    Affects Versions: 2.7.0
>            Reporter: Sunil G
>            Assignee: Chen Ge
>             Fix For: 3.0.0-alpha2
>
>         Attachments: Improvement on debugdiagnostic information - YARN.pdf, SchedulerActivityManager-TestReport
v2.pdf, SchedulerActivityManager-TestReport.pdf, YARN-4091-branch-2.001.patch, YARN-4091-design-doc-v1.pdf,
YARN-4091.1.patch, YARN-4091.2.patch, YARN-4091.3.patch, YARN-4091.4.patch, YARN-4091.5.patch,
YARN-4091.5.patch, YARN-4091.6.patch, YARN-4091.7.patch, YARN-4091.8.patch, YARN-4091.preliminary.1.patch,
app_activities v2.json, app_activities.json, node_activities v2.json, node_activities.json
>
>
> As schedulers are improved with various new capabilities, more configurations which tunes
the schedulers starts to take actions such as limit assigning containers to an application,
or introduce delay to allocate container etc. 
> There are no clear information passed down from scheduler to outerworld under these various
scenarios. This makes debugging very tougher.
> This ticket is an effort to introduce more defined states on various parts in scheduler
where it skips/rejects container assignment, activate application etc. Such information will
help user to know whats happening in scheduler.
> Attaching a short proposal for initial discussion. We would like to improve on this as
we discuss.



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