dbtsai edited a comment on issue #27728: [SPARK-25556][SPARK-17636][SPARK-31026][SPARK-31060][SQL][test-hive1.2] Nested Column Predicate Pushdown for Parquet URL: https://github.com/apache/spark/pull/27728#issuecomment-607011110 It really depends on the data and if we can skip most of the row group by having a predicate in nested field. For our production jobs, we are able to get 20x speed-up in clock time, and 8x less data being read. I will create a synthetic benchmark for this feature. Thanks,
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