RussellSpitzer commented on pull request #2877:
URL: https://github.com/apache/iceberg/pull/2877#issuecomment-887947654


   Ok so trying to fix this from the Source side, the issue here for Entries 
table is although it reports a schema of
   ```
   status, snapshot_id, sequence_number, data_file <Struct with 15 fields>
   ```
   
   The manifest reader is allowed to project within data file which means the 
actual GenericManifestFiles it creates have a schema of
   ```
   status, snapshot_id, sequence_number, data_file < pruned columns>
   ```
   
   This means the table schema as set in the read tasks is incorrect and does 
not match what is actually in the read data.


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