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From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5792) adopt the id prefix for YARN, MR, and DS entities
Date Mon, 14 Nov 2016 21:48:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-5792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15665142#comment-15665142

Sangjin Lee commented on YARN-5792:

I went over the latest patch, and had some comments.

- l.170: nit: let's make this final

- l.315: I don't see a reason it needs to be static. Let's make it an instance variable. Nit:
let's also make it final.

- l.1073, 1083: Strictly speaking, we don't need the id prefix for the job id, because there
is only one job entity per YARN application, right? Should we skip setting the prefix for
job entities?

- l.142: The name is bit too verbose. Could there be a better name for this? Would {{launchTime}}
cause confusion?

In addition, should we revisit and change {{TimelineEntity.compareTo()}} to use the entity
id prefix? We may also need to review {{TimelineEntityReader.readEntities()}} and see if we
need to change it.

> adopt the id prefix for YARN, MR, and DS entities
> -------------------------------------------------
>                 Key: YARN-5792
>                 URL: https://issues.apache.org/jira/browse/YARN-5792
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-5355
>            Reporter: Sangjin Lee
>            Assignee: Varun Saxena
>         Attachments: YARN-5792-YARN-5355.01.patch, YARN-5792-YARN-5355.02.patch, YARN-5792-YARN-5355.03.patch,
> We introduced the entity id prefix to support flexible entity sorting (YARN-5715). We
should adopt the id prefix for YARN entities, MR entities, and DS entities to take advantage
of the id prefix.

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