peter-toth commented on PR #59916:
URL: https://github.com/apache/spark/pull/59916#issuecomment-6640869881

   @dongjoon-hyun, thanks for round 4! It is addressed in 
[a90e1fb](https://github.com/apache/spark/pull/59916/commits/a90e1fb8b02274ebca49b0364b216577b1d4fd75):
   - 1, 2 and 4: for a key whose DPP filters are all dropped, the plan that the 
bloom filter's subquery reads may hold a cache only if scanning it again gives 
the same rows. The key's type must compare by its bytes. A DPP filter in that 
plan counts only if it is `onlyInBroadcast`. A scratch run at becfca3 confirmed 
item 2.
   - 8: `cannotFail` now builds on `ExprUtils.canEvaluateUnconditionally`.
   - 3: added to the Known limits.
   - The rest is answered in the threads.
   


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