[GitHub] [arrow-datafusion] jackwener commented on pull request #4233: add a checker to confirm optimizer can keep plan schema immutable.

[GitBox]

jackwener commented on PR #4233:
URL: 
https://github.com/apache/arrow-datafusion/pull/4233#issuecomment-1318095765

   Thanks @andygrove review. 
   polish error message to  add the expected and actual schema, and add a UT.


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