dustinCodes84600 commented on PR #6116:
URL: 
https://github.com/apache/datafusion-comet/pull/6116#issuecomment-5822384733

   Hit this while moving a Spark 3.5 workload between legacy Parquet writers 
and newer files carrying nested field IDs. We'd disabled field-ID matching but 
still saw Spark reject the ID-free partitions, while Comet silently read them, 
so matching this behavior is useful for that mixed directory case.
   
   btw, made a quick visual pass while reading: 
https://flyovers.dev/flyover/a0bb4405-0c31-4b84-a37b-52a59b22fdf2


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