Apache Iceberg version

1.3.1 (latest release)

Query engine

Spark

Please describe the bug 🐞

The spec calls the following fields as follows:

504 added_files_count
505 existing_files_count
506 deleted_files_count

The implementation calls them as follows:

optional(504, "added_data_files_count"
  optional(505, "existing_data_files_count"
  optional(506, "deleted_data_files_count"

(The _data is in the implementation, but not in the spec)

And hence the produced iceberg use these field names, which deviate from the names in the spec. Either the spec or the implementation should be updated.