carloea2 opened a new issue, #8207:
URL: https://github.com/apache/texera/issues/8207

   ### What happened?
   
   Executor loading validates that user code defines exactly one operator with 
an assert. Optimized Python removes that validation, so code with multiple 
operators silently selects the first definition and can run unintended logic.
   
   Before: multiple operator definitions -> first operator is silently selected
   
   After: multiple operator definitions -> ValueError rejects ambiguous code
   
   ### How to reproduce?
   
   1. Run the Python worker with optimization enabled.
   2. Load user code defining two concrete operators.
   3. Observe that the first operator is returned without an error.
   
   A direct run on main produced:
   
   ```text
   optimized= True
   selected_definition= FirstOperator
   error_raised= False
   ```
   
   ### Version/Branch
   
   1.3.0-incubating-SNAPSHOT (main)
   
   ### Commit Hash
   
   70c21145887920528d7d5540e3fb790b43e8b759
   
   ### What browsers are you seeing the problem on?
   
   Not browser-specific.
   
   ### Relevant log output
   
   None.


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