OSINTAI edited a comment on issue #10624:
URL: 
https://github.com/apache/incubator-superset/issues/10624#issuecomment-676703147


   This is a description of the file and what I did:
   * I have uploaded a 161 MB CSV file.
   * It contains 29 columns and "764930" rows
   * The data is text and numbers
   * The upload took around 15 minutes and it was successful.
   
   
![Success](https://user-images.githubusercontent.com/5264558/90689270-16812b80-e270-11ea-87a8-7ecba0bf5ccd.png)
   
   * When I started querying the data (country name, imported items, dates, 
validity date and 5 other values) to project it on the World Map, the query 
took around 2 minutes then a red "timeout" ribbon appeared. (Unfortunately, I 
did not take a screenshot).
   * As a workaround, I have run a simple query (country name and COUNT of 
imported items) and it worked.
   
   


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