Spark 之 Columnar.scala

spark/sql/core/src/main/scala/org/apache/spark/sql/execution/Columnar.scala

 case class ColumnarToRowExec(child: SparkPlan) extends ColumnarToRowTransition with CodegenSupport


private[execution] class RowToColumnConverter(schema: StructType) extends Serializable


private object RowToColumnConverter


case class RowToColumnarExec(child: SparkPlan) extends RowToColumnarTransition