makarandhinge opened a new pull request, #3811:
URL: https://github.com/apache/parquet-java/pull/3811

   ### Rationale for this change
   
   Recursive protobuf messages can contain collection fields whose element 
types recursively reference protobuf messages. The current handling does not 
correctly support these recursive collection structures.
   
   This change fixes the recursive protobuf collection handling so that these 
schemas can be processed correctly.
   
   ### What changes are included in this PR?
   
   - Fix recursive handling of protobuf collection types.
   - Ensure recursively nested protobuf collection structures are handled 
correctly.
   - Add/update test coverage for the affected recursive protobuf collection 
case.
   
   ### Are these changes tested?
   
   Yes.
   
   The affected protobuf collection handling is covered by tests, and the 
relevant test suite passes.
   
   ### Are there any user-facing changes?
   
   No user-facing CLI/API changes are intended. This is a correctness fix for 
protobuf schema/collection handling.


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