Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5762#discussion_r29306234
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicOperators.scala
---
@@ -310,6 +310,10 @@ case class Distinct(child: LogicalPlan) extends
UnaryNode {
override def output: Seq[Attribute] = child.output
}
+case class Coalesce(numPartitions: Int, shuffle: Boolean, child:
LogicalPlan) extends UnaryNode {
--- End diff --
It's going to be super confusing with existing repartition and
CoalescePartitions.
How about
Repartition vs RepartitionByExpression?
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