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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5561) [Atsv2] : Support for ability to retrieve apps/app-attempt/containers and entities via REST
Date Mon, 29 Aug 2016 17:18:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15446467#comment-15446467
] 

Rohith Sharma K S commented on YARN-5561:
-----------------------------------------

It is required to get all the apps in cluster. REST client will ask for limit and fromId.
FromId is something which filter need to support so from where to retrieve the apps(not there
now). For example , app-1 to app-10 are there. So if fromId=app-5 then apps app-6 to app-10
should be retrieved. Is there any other way to achieve this now?

bq. If merely list of apps within a cluster is required(without any other information) we
can probably serve this from app to flow table.
Not only app id's but also other information required. And currently the way I see is need
to get all the flows first and for each flows, retrieve apps. This is something where client
need to lot of REST calls constructing for each flows. 

> [Atsv2] : Support for ability to retrieve apps/app-attempt/containers and entities via
REST
> -------------------------------------------------------------------------------------------
>
>                 Key: YARN-5561
>                 URL: https://issues.apache.org/jira/browse/YARN-5561
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: timelinereader
>            Reporter: Rohith Sharma K S
>            Assignee: Rohith Sharma K S
>         Attachments: YARN-5561.v0.patch
>
>
> ATSv2 model lacks retrieval of {{list-of-all-apps}}, {{list-of-all-app-attempts}} and
{{list-of-all-containers-per-attempt}} via REST API's. And also it is required to know about
all the entities in an applications.
> It is pretty much highly required these URLs for Web  UI.
> New REST URL would be 
> # GET {{/ws/v2/timeline/apps}}
> # GET {{/ws/v2/timeline/apps/\{app-id\}/appattempts}}.
> # GET {{/ws/v2/timeline/apps/\{app-id\}/appattempts/\{attempt-id\}/containers}}
> # GET {{/ws/v2/timeline/apps/\{app id\}/entities}} should display list of entities that
can be queried.  



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