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Posted to github@datafusion.apache.org by "Dandandan (via GitHub)" <gi...@apache.org> on 2025/04/12 08:03:35 UTC

Re: [I] Perf: Support automatically concat_batches for sort which will improve performance [datafusion]

Dandandan commented on issue #15375:
URL: https://github.com/apache/datafusion/issues/15375#issuecomment-2798726588

   Really nice observation! I think we should drive this further.
   
   Some further observations I saw when looking at the current implementation on master for the in memory merging part:
   
   * the in memory batches are not cleared after batches are sorted
   * it is needlessly using `spawn_buffered` in the code for streaming merge () sorting can be done on the spot here and batches dropped as soon as possible.


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