Dandandan commented on PR #16380:
URL: https://github.com/apache/datafusion/pull/16380#issuecomment-2969139729

   > I've noticed that it is possible for `interleave` to perform worse than 
`take` despite the `Arc` clones from `take`. This happens twice as well for 
`equal_row_arr` and `build_batch_from_indices`.
   
   Yes that will be the tricky part. We gain some speed during probing by 
concatenating the left side (which itself can be slow) into a singe batch.


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