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From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5174) several updates/corrections to timeline service documentation
Date Fri, 10 Jun 2016 22:03:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-5174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15325358#comment-15325358
] 

Sangjin Lee commented on YARN-5174:
-----------------------------------

Thanks [~gtCarrera9] for the great content!

Just so I understand, your proposal is to restructure and expand the existing {{TimelineServiceV2.html}}
to include this content, right? There seems to be a fair amount of overlap with this doc and
the existing doc, and I wanted to make sure we're on the same page.

The content looks good to me for the most part. If I have to nitpick one,
bq. Each metric item contains metric name (id), value, and what kind of aggregation operation
should be performed in this metric (no­op by default).
I am not sure if we need to highlight the aggregation operation bit. First of all, this is
only about the *application* aggregation. Also, user code should normally post the application-level
metrics directly onto the application entity (e.g. MR AM writing job metrics on the application
entity). Should we simply drop the mention of the aggregation op part?

> several updates/corrections to timeline service documentation
> -------------------------------------------------------------
>
>                 Key: YARN-5174
>                 URL: https://issues.apache.org/jira/browse/YARN-5174
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-2928
>            Reporter: Sangjin Lee
>            Assignee: Sangjin Lee
>              Labels: yarn-2928-1st-milestone
>         Attachments: PublishingApplicationDatatoYARNTimelineServicev.pdf
>
>
> One part that is missing in the documentation is the need to add {{hbase-site.xml}} on
the client side (the client hadoop cluster). First, we need to arrive at the minimally required
client setting to connect to the right hbase cluster. Then, we need to document it so that
users know exactly what to do to configure the cluster to use the timeline service v.2.



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