xiedeyantu commented on PR #4803:
URL: https://github.com/apache/calcite/pull/4803#issuecomment-4115381720

   Perhaps I didn't make myself clear. This cache optimization hasn't gone 
through extensive testing, so strictly speaking, its correctness could be 
questionable. Just like when we previously introduced new decorrelation and the 
new DpHyp — even though there was a lot of testing to prove they were correct, 
we still marked them as experimental, as they hadn't undergone extensive 
production validation. So, I think the entire feature could be marked as 
experimental. The above is just to clarify what I didn't explain clearly in my 
previous reply. As for this PR, I don't have many more suggestions. It can be 
kept as is, and let's prepare to merge it!


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