prodeezy commented on issue #78: Collect min/max value statistics for nested structs in ParquetMetrics URL: https://github.com/apache/incubator-iceberg/issues/78#issuecomment-469601004 Based on the discussion above we could add support for struct metrics and struct-based filtering. Filtering on structs would be a good incremental feature to add for complex schemas where often logical grouping can really help. Especially since there is a [PR available](https://github.com/apache/spark/pull/22573) in Spark now that one can cherry pick to push down struct-based filters. If we agree then I can work on this (unless Anton has one on the way already).
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