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https://issues.apache.org/jira/browse/YARN-5561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15450294#comment-15450294
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Li Lu commented on YARN-5561:
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Thanks [~rohithsharma]! I took a deeper look into the patch. The overall
approach LGTM. One concern I have is, shall we expose the semantics of
"containers" and "appattempts" in timeline reader API level? To me, the
timeline API is independent from the actual use cases: it merely provides
concrete ways to retrieve timeline entities. Similar to the past AHS APIs,
maybe we'd like to abstract a separate layer of APIs for YARN to read data from
timeline service? Of course we can integrate the new "AHS REST API" layer in
the timeline reader server, but code-wise shall we separate the new APIs from
TimelineReaderWebService?
BTW, I set this JIRA to be patch available so that Jenkins can find the patch
and test it. If you want something otherwise please feel free to change it
back. Thanks!
> [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: Sub-task
> Components: timelinereader
> Reporter: Rohith Sharma K S
> Assignee: Rohith Sharma K S
> Attachments: YARN-5561.patch, 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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