fallintoplace opened a new pull request, #1617:
URL: https://github.com/apache/iceberg-go/pull/1617

   ## What changed
   
   Reject equality-delete files when a field ID resolves to a column name that 
occurs more than once in the physical Arrow schema.
   
   ## Why
   
   Arrow permits duplicate field names. The reader previously selected the 
first match, which could apply deletion semantics using an arbitrary physical 
column while silently ignoring another column with the same name.
   
   ## Testing
   
   - Added an end-to-end scan using a Parquet equality-delete file with 
duplicate `id` columns and different values
   - `go test ./table`


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