[jira] [Created] (YARN-6871) Add a new REST API GetAppReport call lighter and faster than the current one

["Giovanni Matteo Fumarola (JIRA)" <ji...@apache.org>]

Giovanni Matteo Fumarola created YARN-6871:
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             Summary: Add a new REST API GetAppReport call lighter and faster than the current one
                 Key: YARN-6871
                 URL: https://issues.apache.org/jira/browse/YARN-6871
             Project: Hadoop YARN
          Issue Type: New Feature
          Components: resourcemanager, router
            Reporter: Giovanni Matteo Fumarola


This jira tracks the effort to create a new REST API similar to the current GetAppReport but lighter and faster.
With the current one we are facing a scalability issues.
E.g. with ~500 applications running the AppReport can reach up to 300MB in size due to the {{ResourceRequest}} in the {{AppInfo}}.
The new method returns for each application the following and essential information:
* The application id;
* The application name;
* The application state according to the ResourceManager - valid values are members of the YarnApplicationState enum: NEW, NEW_SAVING, SUBMITTED, ACCEPTED, RUNNING, FINISHED, FAILED, KILLED;
* The final status of the application if finished - reported by the application itself - valid values are: UNDEFINED, SUCCEEDED, FAILED, KILLED;
* The web URL that can be used to track the application;
* Detailed diagnostics information;
* The URL of the application master container logs;
* The nodes http address of the application master;
* The progress of the application as a percent.

Yarn RM will return the new result faster and it will use less compute cycles to create the report and it will improve the YARN RM and Client's performances.



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