shahidki31 opened a new pull request #26353: [SPARK-29590][WEBUI]JDBC/ODBC tab 
in the spark UI support hide tables, to make it consistent with other tabs.
URL: https://github.com/apache/spark/pull/26353
 
 
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   Currently, JDBC/ODBC tab in the WEBUI doesn't support hiding table. Other 
tabs in the web ui like, Jobs, stages, SQL etc supports hiding table (refer 
https://github.com/apache/spark/pull/22592).
   In this PR, added the support for hide table in the jdbc/odbc tab also.
   
   
   ### Why are the changes needed?
   Spark ui about the contents of the form need to have hidden and show 
features, when the table records very much. Because sometimes you do not care 
about the record of the table, you just want to see the contents of the next 
table, but you have to scroll the scroll bar for a long time to see the 
contents of the next table.
   
   ### Does this PR introduce any user-facing change?
   No, except support of hide table
   
   ### How was this patch tested?
   Manually tested
    ![Screenshot 2019-11-01 at 12 10 05 
PM](https://user-images.githubusercontent.com/23054875/68007364-61aa5d80-fca1-11e9-841e-c5a7382871fa.png)
   ![Screenshot 2019-11-01 at 12 10 43 
PM](https://user-images.githubusercontent.com/23054875/68007355-5a834f80-fca1-11e9-844a-f4ba1a333db7.png)
   

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