andygrove commented on issue #1632:
URL: 
https://github.com/apache/datafusion-ballista/issues/1632#issuecomment-4356806508

   With sort-based shuffle disabled, it is much faster, confusingly.
   
   ```
   Query 1 took 19427.7 ms and returned 4 rows
   Query 2 took 6971.9 ms and returned 100 rows
   Query 3 took 12378.4 ms and returned 10 rows
   Query 4 took 6086.6 ms and returned 5 rows
   Query 5 took 29025.9 ms and returned 5 rows
   Query 6 took 4478.6 ms and returned 1 rows
   Query 7 took 44554.4 ms and returned 4 rows
   Query 8 took 29580.4 ms and returned 2 rows
   Query 9 took 49119.9 ms and returned 175 rows
   Query 10 took 15762.9 ms and returned 20 rows
   Query 11 took 4772.3 ms and returned 0 rows
   Query 12 took 10083.2 ms and returned 2 rows
   Query 13 took 17134.2 ms and returned 45 rows
   Query 14 took 4923.0 ms and returned 1 rows
   Query 15 took 5867.2 ms and returned 0 rows
   Query 16 took 3431.7 ms and returned 27840 rows
   Query 17 took 45181.6 ms and returned 1 rows
   Query 18 took 52234.5 ms and returned 100 rows
   Query 19 took 12596.4 ms and returned 1 rows
   Query 20 took 10437.2 ms and returned 17971 rows
   Query 21 took 51066.2 ms and returned 100 rows
   Query 22 took 3160.8 ms and returned 7 rows
   ```
   


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