wzx140 opened a new pull request, #8007:
URL: https://github.com/apache/paimon/pull/8007

   ### Purpose
   
   Linked issue: close #xxx
   
   Broadcast the data evolution MERGE INTO file map instead of embedding the 
full map in every task closure. This reduces Spark task serialization pressure 
for large merge plans.
   
   ### Tests
   
   Added RowTrackingTest coverage in the Spark 3.5 module. Not run locally in 
this split step.
   
   ### API and Format
   
   No API or storage format change.
   
   ### Documentation
   
   No.
   
   ### Generative AI tooling
   
   Generated-by: OpenAI GPT-5


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