js8544 commented on PR #38790:
URL: https://github.com/apache/arrow/pull/38790#issuecomment-1831166153

   Thanks for your contribution! The proposal sounds good: caching at node 
level is indeed better. I have a couple of questions regarding the 
implementation:
   1. Could you resolve the conflicts so that we can initiate the CI checks?
   2. I see that schema checks are completely removed. Will invalid execution 
happen, e.g. `Projector` of one type executed on a `RecordBatch` of another 
type? If so, is it possible to keep the checks on types and only skip the 
checks on names? 


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