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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6626) Embed REST API service into RM
Date Mon, 18 Sep 2017 21:21:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16170741#comment-16170741
] 

Eric Yang commented on YARN-6626:
---------------------------------

Base on new finding that ui2 webapp is highly coupled with RMWebServices.java.  However /ui2
and RMWebServices are initialized are two separate web applications.  Java Sessions are not
synchronized between both web applications.  At this time, ui2 is pure javascript based webapp.
 Java session is not yet a real problem.  However, it might be best to manage application
oriented REST end points independent from ui2 webapplication to avoid introducing out of sync
Java session problems.


> Embed REST API service into RM
> ------------------------------
>
>                 Key: YARN-6626
>                 URL: https://issues.apache.org/jira/browse/YARN-6626
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Gour Saha
>             Fix For: yarn-native-services
>
>         Attachments: YARN-6626.yarn-native-services.001.patch
>
>
> As of now the deployment model of the Native Services REST API service is standalone.
There are several cross-cutting solutions that can be inherited for free (kerberos, HA, ACLs,
trusted proxy support, etc.) by the REST API service if it is embedded into the RM process.
In fact we can expose the REST API via the same port as RM UI (8088 default). The URI path
/services/v1/applications will distinguish the REST API calls from other RM APIs.



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