mccheah commented on issue #16: Custom metadata in data files URL: https://github.com/apache/incubator-iceberg/issues/16#issuecomment-443012368 We store the information in our internal system as per-file metadata. We want to be able to batch-fetch this information from our system and load it into the Iceberg table, before invoking the Iceberg data source reader. We would store the information per file in the `DataFile` object in Iceberg.
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