andygrove commented on pull request #706:
URL: https://github.com/apache/arrow-datafusion/pull/706#issuecomment-877843494


   > One concern I have is that the current config also sets the number of 
maximum threads during reading parquet files.
   
   Is this still true though? I know we were creating threads at one point in 
time but we are using Tokio/async now, so we are not creating threads. 
Increasing partition count will increase the number of async tasks that we run 
in the thread pool but won't increase the number of threads.


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