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Posted to github@arrow.apache.org by "yjshen (via GitHub)" <gi...@apache.org> on 2023/04/30 01:52:27 UTC

[GitHub] [arrow-datafusion] yjshen commented on pull request #6163: Adaptive in-memory sort (~2x faster) (#5879)

yjshen commented on PR #6163:
URL: https://github.com/apache/arrow-datafusion/pull/6163#issuecomment-1528916786

   > Previously ExternalSorter would sort every batch it receives, but then perform an in-memory sort by concatenating all the inputs together.
   >
   > This PR modifies ExternalSorter to not presort batches
   
   I think that sorting the batch while it is still in the cache, immediately after its generation, can effectively utilize the cache and enhance performance?


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