Sahil Takiar commented on HIVE-18525:

[~aihuaxu] any other comments?

> Add explain plan to Hive on Spark Web UI
> ----------------------------------------
>                 Key: HIVE-18525
>                 URL: https://issues.apache.org/jira/browse/HIVE-18525
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>            Reporter: Sahil Takiar
>            Assignee: Sahil Takiar
>            Priority: Major
>         Attachments: HIVE-18525.1.patch, HIVE-18525.2.patch, 
> HIVE-18525.3.patch, HIVE-18525.4.patch, Job-Page-Collapsed.png, 
> Job-Page-Expanded.png, Map-Explain-Plan.png, Reduce-Explain-Plan.png
> More of an investigation JIRA. The Spark UI has a "long description" of each 
> stage in the Spark DAG. Typically one stage in the Spark DAG corresponds to 
> either a {{MapWork}} or {{ReduceWork}} object. It would be useful if the long 
> description contained the explain plan of the corresponding work object.
> I'm not sure how much additional overhead this would introduce. If not the 
> full explain plan, then maybe a modified one that just lists out all the 
> operator tree along with each operator name.

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