Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7774#discussion_r36132932
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkPlan.scala ---
@@ -110,11 +121,30 @@ abstract class SparkPlan extends QueryPlan[SparkPlan]
with Logging with Serializ
"Operator will receive unsafe rows as input but cannot process
unsafe rows")
}
RDDOperationScope.withScope(sparkContext, nodeName, false, true) {
+ prepare()
doExecute()
}
}
/**
+ * Do the preparation for SparkPlan.
+ */
+ final def prepare(): Unit = {
--- End diff --
can this one just walks down the query plan and call prepare? In that case,
we don't need any of the super.doPrepare
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