Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22104#discussion_r239738437
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkOptimizer.scala ---
@@ -31,7 +31,8 @@ class SparkOptimizer(
override def defaultBatches: Seq[Batch] = (preOptimizationBatches ++
super.defaultBatches :+
Batch("Optimize Metadata Only Query", Once,
OptimizeMetadataOnlyQuery(catalog)) :+
- Batch("Extract Python UDF from Aggregate", Once,
ExtractPythonUDFFromAggregate) :+
+ Batch("Extract Python UDFs", Once,
+ Seq(ExtractPythonUDFFromAggregate, ExtractPythonUDFs): _*) :+
--- End diff --
but we already have `ExtractPythonUDFFromAggregate` here...
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