[MINOR][SQL] Remove invalid comment from SparkStrategies

HeartSaVioR · HeartSaVioR · commit 8afb36b20aab · 2018-06-20T10:48:17.000+09:00
* The option is no longer preferred one as below comment * #21388 (comment) * Removing this to prevent contributors to waste their times
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala
@@ -494,7 +494,6 @@ abstract class SparkStrategies extends QueryPlanner[SparkPlan] {
     }
   }
 
-  // Can we automate these 'pass through' operations?
   object BasicOperators extends Strategy {
     def apply(plan: LogicalPlan): Seq[SparkPlan] = plan match {
       case d: DataWritingCommand => DataWritingCommandExec(d, planLater(d.query)) :: Nil

Original file line number	Diff line number	Diff line change
`@@ -494,7 +494,6 @@ abstract class SparkStrategies extends QueryPlanner[SparkPlan] {`
`494`	`494`	`}`
`495`	`495`	`}`
`496`	`496`
`497`		`- // Can we automate these 'pass through' operations?`
`498`	`497`	`object BasicOperators extends Strategy {`
`499`	`498`	`def apply(plan: LogicalPlan): Seq[SparkPlan] = plan match {`
`500`	`499`	`case d: DataWritingCommand => DataWritingCommandExec(d, planLater(d.query)) :: Nil`