Github user kanzhang commented on a diff in the pull request:
https://github.com/apache/spark/pull/448#discussion_r12304047
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/api/java/JavaSchemaRDD.scala ---
@@ -45,4 +48,141 @@ class JavaSchemaRDD(
override def wrapRDD(rdd: RDD[Row]): JavaRDD[Row] = JavaRDD.fromRDD(rdd)
val rdd = baseSchemaRDD.map(new Row(_))
+
+ override def toString: String = baseSchemaRDD.toString
+
+ //
=======================================================================
+ // Base RDD functions that do NOT change schema
+ //
=======================================================================
+
+ // Common RDD functions
+
+ /** Persist this RDD with the default storage level (`MEMORY_ONLY`). */
+ def cache(): this.type = {
--- End diff --
Ah, yes.
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