Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4355#discussion_r135524948
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/AggregationCodeGenerator.scala
---
@@ -42,6 +46,18 @@ class AggregationCodeGenerator(
input: TypeInformation[_ <: Any])
extends CodeGenerator(config, nullableInput, input) {
+ // set of statements for cleanup dataview that will be added only once
+ // we use a LinkedHashSet to keep the insertion order
+ private val reusableCleanupStatements = mutable.LinkedHashSet[String]()
+
+ /**
+ * @return code block of statements that need to be placed in the
cleanup() method of
--- End diff --
`RichFunction` does not have a `cleanup()` method. The `cleanup()` method
is a method of `GeneratedAggregations`.
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