alamb commented on issue #6983:
URL: 
https://github.com/apache/arrow-datafusion/issues/6983#issuecomment-1638611618

   Thank you @gobraves  -- that would be great. Once you have looked around let 
me know if you have any questions
   
   Basically I would suggest first verifying that running the equivalent SQL 
with `datafusion-cli`
   ```sql
   create table t;
   INSERT INTO t from SELECT * from `data.parquet`
   ```
   
   is properly parallelized
   
   Then look at the plan that comes out
   
   ```sql
   INSERT INTO t from SELECT * from `data.parquet`
   ```
   
   And try to update DataFrame::cache() to use the same pla


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