[GitHub] [incubator-iceberg] chenjunjiedada commented on issue #824: Add data_file_type to DataFile structure

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chenjunjiedada commented on issue #824: Add data_file_type to DataFile structure 
URL: https://github.com/apache/incubator-iceberg/issues/824#issuecomment-604825958
 
 
   @openinx FYI, Just change the title for naming since the deletion file is a data file too, so using `file_type` would be more clear.  
   
   And it should be defined as optional since there may be existing data files in the table. The actual stored value of `file_type` could be:
   
   - null: normal data file that has the defined table schema,
   - 0: normal data file that has the defined table schema, the default 
   - 1: file and position based deletion data file that has the schema (_file, _pos)
   - 2: column equality-based deletion data file that has the schema(_filed_id, _value)
   
   The read value should be (0, 1, 2), though.

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