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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6626) Embed REST API service into RM
Date Tue, 26 Sep 2017 00:41:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16180010#comment-16180010

Jian He commented on YARN-6626:

Thanks [~eyang] for the patch, some questions and comments on the patch:

- why is ApiServer needed to be extended from WebServices
- why is the change in Resource.java ? If it’s not related to this patch, we should not
include it.
- why is hadoop-yarn-server-common dependency added in api-server pom.xml?
- By default, YARN_API_SERVICES_ENABLE should be false, because the feature is still experimental

- “yarn.webapp.api-services.enable“: “api-services” can be “api-service” ?
- can you also update the QuickStart.md to metion the option of starting api-service in embedded
- for the “@XmlType(name)“ annotation, what is the implication of that? Does this change
the filed name of the API ?

> 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, YARN-6626.yarn-native-services.002.patch,
YARN-6626.yarn-native-services.003.patch, YARN-6626.yarn-native-services.004.patch, YARN-6626.yarn-native-services.005.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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