cloud-fan commented on a change in pull request #25471: [SPARK-28753][SQL]
Dynamically reuse subqueries in AQE
URL: https://github.com/apache/spark/pull/25471#discussion_r314609561
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/PlanAdaptiveSubqueries.scala
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@@ -17,13 +17,15 @@
package org.apache.spark.sql.execution.adaptive
+import scala.collection.mutable
+
import org.apache.spark.sql.catalyst.expressions
import org.apache.spark.sql.catalyst.expressions.ListQuery
import org.apache.spark.sql.catalyst.rules.Rule
import org.apache.spark.sql.execution.{ExecSubqueryExpression, SparkPlan}
case class PlanAdaptiveSubqueries(
- subqueryMap: Map[Long, ExecSubqueryExpression]) extends Rule[SparkPlan] {
+ subqueryMap: mutable.HashMap[Long, ExecSubqueryExpression]) extends
Rule[SparkPlan] {
Review comment:
nin: we can write `scala.collect.Map` here.
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