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https://issues.apache.org/jira/browse/SPARK-2035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Darabos updated SPARK-2035:
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    Attachment: example-html.tgz

I've sent a pull request (https://github.com/apache/spark/pull/981), and here 
is an example of the resulting HTML. It is the worst possible example, because 
I used `spark-shell`, but it's hopefully enough to demo the idea.

> Make a stage's call stack available on the UI
> ---------------------------------------------
>
>                 Key: SPARK-2035
>                 URL: https://issues.apache.org/jira/browse/SPARK-2035
>             Project: Spark
>          Issue Type: Improvement
>          Components: Web UI
>            Reporter: Daniel Darabos
>            Priority: Minor
>         Attachments: example-html.tgz
>
>
> Currently the stage table displays the file name and line number that is the 
> call site that triggered the given stage. This is enormously useful for 
> understanding the execution. But once a project adds utility classes and 
> other indirections, the call site can become less meaningful, because the 
> interesting line is further up the stack.
> An idea to fix this is to display the entire call stack that triggered the 
> stage. It would be collapsed by default and could be revealed with a click.
> I have started working on this. It is a good way to learn about how the RDD 
> interface ties into the UI.



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