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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/05/31 14:19:59 UTC

[GitHub] [arrow-datafusion] jorgecarleitao commented on issue #418: [question] performance considerations of create_key_for_col (HashAggregate)

jorgecarleitao commented on issue #418:
URL: https://github.com/apache/arrow-datafusion/issues/418#issuecomment-851522837


   fwiw, I have used the hashing [in the experimental branch](https://github.com/apache/arrow-datafusion/pull/68/files#diff-03876812a8bef4074e517600fdcf8e6b49f1ea24df44905d6d806836fd61b2a8R328) and I am getting some in-memory speedups:
   
   |                        |master (ms)|1b48f389 (ms)|
   |------------------------|----------:|------------:|
   |Q1 memory               |      332.9|        239.6|
   
   


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