peter-toth commented on PR #58895:
URL: https://github.com/apache/spark/pull/58895#issuecomment-5912892579

   @dongjoon-hyun thank you. Round 6 is answered in the threads, and the 
description is up to date.
   
   - The row-index gate can no longer be bypassed by case. The planner 
normalizes the conjuncts it offers to the relation's column names.
   - A task kill or a fatal error behind a key expression's error is rethrown 
as it is, not absorbed.
   - A decode error in a key page gives the row group up, so a corrupt key page 
fails where a plain read fails. The conf doc describes the `ignoreCorruptFiles` 
difference in general terms now.
   - The row-index route measured 2% to 8% slower than master, and the lazy 
coalescing was the cause. It builds its ranges up front again, and a 
same-machine A/B puts it level with master.
   - Everything else is fixed as you suggested, and the new behavior has tests 
that fail without it.
   
   One correction to round 5. Removing the 2-arg `initialize` override tripped 
MiMa, so the override is back and only calls `super`.


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