Column statistics are the secret to Apache Parquet’s blazing fast performance. By storing compact summaries—like min, max, and null counts—for row groups, column chunks, and pages, readers can easily skip irrelevant data that doesn’t match a query.
Column statistics are the secret to Apache Parquet’s blazing fast performance. By storing compact summaries—like min, max, and null counts—for row groups, column chunks, and pages, readers can easily skip irrelevant data that doesn’t match a query.