aokolnychyi commented on a change in pull request #26751: [SPARK-30107][SQL] Expose nested schema pruning to all V2 sources URL: https://github.com/apache/spark/pull/26751#discussion_r354287169
########## File path: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/parquet/ParquetScanBuilder.scala ########## @@ -68,6 +68,10 @@ case class ParquetScanBuilder( // All filters that can be converted to Parquet are pushed down. override def pushedFilters(): Array[Filter] = pushedParquetFilters + override def pruneColumns(requiredSchema: StructType): Unit = { + this.requiredSchema = requiredSchema + } Review comment: Basically, the default implementation in `FileScanBuilder` is pruning only top-level attributes. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org