[jira] [Commented] (TEZ-2942) Tez UI: Allow users to drill down into counters

["Sreenath Somarajapuram (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TEZ-2942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15483243#comment-15483243 ] 

Sreenath Somarajapuram commented on TEZ-2942:
---------------------------------------------

Guess the best approach would be to implement it as part of counters page.
Following is how we could implement it for DAG counters, implementation for vertex counters would also be similar.
- Once DAG counters page is displayed. We load all vertices in the background, may be a progress bar can also be shown. 
- On loading all vertices, the UI automatically finds the aggregated counters and enabled a link on the respective counter values.
- On selecting/clicking a counter value link, a subpage will be displayed with a table. Vertex name and counter value will be the two columns. Selected counter name and group will be displayed at the top. The link could be something like {code}/dag/:dag_id/counter?counterGroupName=<group-name>&counterName=<counter-name>{code}

> Tez UI: Allow users to drill down into counters
> -----------------------------------------------
>
>                 Key: TEZ-2942
>                 URL: https://issues.apache.org/jira/browse/TEZ-2942
>             Project: Apache Tez
>          Issue Type: Bug
>          Components: UI
>            Reporter: Jonathan Eagles
>
> One feature gap with MR history server is the ability to drill down into counters. A can click on a specific counter in the counter table and see the breakdown across tasks. This is most useful in the DAG counters and vertex counters views to drill down to understand the breakdown of the counter at the level deeper. For example DAG -> Vertex -> Task
> As part of discussion with TEZ-2923, we should enhance the AM counter caching since counter drill down can make use of the cache.



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