[GitHub] spark pull request #22595: [SPARK-25577][Web UI] Add an on-off switch to dis...

[LantaoJin]

GitHub user LantaoJin opened a pull request:

    https://github.com/apache/spark/pull/22595

    [SPARK-25577][Web UI] Add an on-off switch to display the executor 
additional columns

    ## What changes were proposed in this pull request?
    
    [SPARK-17019](https://issues.apache.org/jira/browse/SPARK-17019) Expose 
off-heap memory usage in WebUI. But it makes this additional columns hidden by 
default. If we want to see them, we need change the css code to rebuild a 
spark-core.jar. It's very inconvenient.
    ```
    .on_heap_memory, .off_heap_memory {
      display: none;
    }
    ```
    
    So I add an on-off switch to show those additional columns. And in future, 
we don't afraid to add more columns.
    
    ## How was this patch tested?
    <img width="693" alt="screen shot 2018-09-30 at 5 45 56 pm" 
src="https://user-images.githubusercontent.com/1853780/46256353-3a042700-c4dc-11e8-8b0f-305281d1fd17.png";>
    <img width="743" alt="screen shot 2018-09-30 at 5 46 06 pm" 
src="https://user-images.githubusercontent.com/1853780/46256356-3f617180-c4dc-11e8-9d24-679db52343fe.png";>


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/LantaoJin/spark SPARK-25577

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/22595.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #22595
    
----
commit c758db01da06d0bc5f4466bab10a330ef812bcc6
Author: LantaoJin <jinlantao@...>
Date:   2018-09-30T10:08:32Z

    [SPARK-25577][Web UI] Add an on-off switch to display the executor 
additional columns

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