Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/13426#discussion_r65283439
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala ---
@@ -34,6 +36,27 @@ import org.apache.spark.sql.execution.joins.{BuildLeft,
BuildRight}
import org.apache.spark.sql.execution.streaming.MemoryPlan
import org.apache.spark.sql.internal.SQLConf
+/**
+ * Converts a logical plan into zero or more SparkPlans. This API is
exposed for experimenting
+ * with the query planner and is not designed to be stable across spark
releases. Developers
+ * writing libraries should instead consider using the stable APIs
provided in
+ * [[org.apache.spark.sql.sources]]
+ */
+@DeveloperApi
+abstract class SparkStrategy extends GenericStrategy[SparkPlan] {
+
+ override protected def planLater(plan: LogicalPlan): SparkPlan =
PlanLater(plan)
--- End diff --
can anybody implement this without planlater being public?
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