Wangda Tan updated YARN-3368:
    Attachment: YARN-3368.poc.1.patch

Uploaded a simple POC YARN-UI patch for discussion, and sample screenshots.

It includes:
- An applications page and a queue page (WIP, now can only show a hierarchy of 
- Based on Ember.js 2.0.

It doesn't include:
- Integration to Hadoop's build system.
- Hosting in RM web UI

Try it:
- Follow the {{README.md}} under project directory.

Purpose of the POC patch is:
- Show how to use a front-end js framework retrive data via REST API and 
renders in browser.
- Unblock timeline server v2 UI POC: YARN-4097.
- *This is a WIP project, nobody should use it in production.*

Thanks a lot to [~pramachandran] and [~Sreenath] who spent a lot of time to 
help instructing how to use Ember.js framework. And suggestions/thoughts from 
[~vinodkv], [~jianhe] and [~gtCarrera9].

> Improve YARN web UI
> -------------------
>                 Key: YARN-3368
>                 URL: https://issues.apache.org/jira/browse/YARN-3368
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Jian He
>         Attachments: YARN-3368.poc.1.patch
> The goal is to improve YARN UI for better usability.
> We may take advantage of some existing front-end frameworks to build a 
> fancier, easier-to-use UI. 
> The old UI continue to exist until  we feel it's ready to flip to the new UI.
> This serves as an umbrella jira to track the tasks. we can do this in a 
> branch.

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