hvanhovell commented on a change in pull request #29224:
URL: https://github.com/apache/spark/pull/29224#discussion_r471309748
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File path:
sql/core/src/main/scala/org/apache/spark/sql/SparkSessionExtensions.scala
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@@ -96,8 +97,10 @@ class SparkSessionExtensions {
type ParserBuilder = (SparkSession, ParserInterface) => ParserInterface
type FunctionDescription = (FunctionIdentifier, ExpressionInfo,
FunctionBuilder)
type ColumnarRuleBuilder = SparkSession => ColumnarRule
+ type QueryStagePrepRuleBuilder = SparkSession => Rule[SparkPlan]
Review comment:
It is marked as unstable and experimental. Do we need to add version
information in that case? I am fine with doing so, but then we should add it
everywhere.
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