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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7215) REST API to list all deployed services by the same user
Date Wed, 20 Sep 2017 04:28:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16172724#comment-16172724

Jian He commented on YARN-7215:

I didn't mean to make RM store the app configs.... in fact, RM has even no way to get the
app configs, yarn-service is just an app to RM's point of view. RM can only store the metaData
of YARN.

Isn't this jira, by description,  to implement "slider list" ? that is as simple as get the
list of apps with some meta status info, which "yarn application -list" command already does
today.  I don't  think we need a solr backend to support such simple use-case. That is also
how "slider list" worked before... User should be able to simply list services without solr
in the picture, just similar to listing apps.

I guess you meant bigger things in YARN-7129 to index apps by configs with solr or something?

If this jira is meant to implement bigger things in YARN-7129,  I can probably open a separate
jira to implement "yarn service list" command, which is a fairly simple patch

> REST API to list all deployed services by the same user
> -------------------------------------------------------
>                 Key: YARN-7215
>                 URL: https://issues.apache.org/jira/browse/YARN-7215
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api, applications
>            Reporter: Eric Yang
>            Assignee: Eric Yang
> In Slider, it is possible to list deployed applications from the same user by using:
> {code}
> slider list
> {code}
> This API can help UI to display application and services deployed by the same user.
> Apiserver does not have ability to list all applications/services at this time.  This
API requires fast response to list all applications because it is a common UI operation. 
ApiServer deployed applications persist configuration in HDFS similar to slider, but using
directory listing to display deployed application might cost too much overhead to namenode.
 We may want to use alternative storage mechanism to cache deployed application configuration
to accelerate the response time of list deployed applications.

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