ColumnarRule¶
ColumnarRule is an abstraction to hold preColumnarTransitions and postColumnarTransitions user-defined rules to inject columnar physical operators to a query plan (using SparkSessionExtensions).
Note
ApplyColumnarRulesAndInsertTransitions physical optimization is used to execute ColumnarRules.
Contract¶
preColumnarTransitions¶
preColumnarTransitions: Rule[SparkPlan]
Used when ApplyColumnarRulesAndInsertTransitions physical optimization is executed.
postColumnarTransitions¶
postColumnarTransitions: Rule[SparkPlan]
Used when ApplyColumnarRulesAndInsertTransitions physical optimization is executed.