hubgeter opened a new pull request, #60130:
URL: https://github.com/apache/doris/pull/60130

   Related PR: #58785
   
   Problem Summary:
   The performance rollback was introduced in #58785. The reason is that, prior 
to #58785, reading ordinary columns did not require filling and saving the RL 
DL. #58785 combined the logic for reading ordinary columns from a struct with 
the logic for reading ordinary columns, and filled and saved the RL DL to 
populate the null map information of the struct. This PR re-separates the 
reading logic.
   


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