xndai commented on issue #1543: [CALCITE-3455] Redundant rule firing for both 
logical and physical nodes
URL: https://github.com/apache/calcite/pull/1543#issuecomment-554097058
 
 
   > Have you seen https://issues.apache.org/jira/browse/CALCITE-2223 ?
   > I think 3455 duplicates 2223, and, unfortunately, there's no trivial 
solution for it.
   
   I don't think this is a duplication. This patch tries to improve the 
optimization performance by avoid firing redundant rules. It's not particularly 
related to cycles between RelSubset.

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