Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3660#discussion_r109423941
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/CodeGenerator.scala
---
@@ -1494,6 +1519,22 @@ class CodeGenerator(
}
/**
+ * Adds a reusable [[java.util.Random]] to the member area of the
generated [[Function]].
+ *
+ * @return member variable term
+ */
+ def addReusableRandom(): String = {
+ val fieldTerm = newName("random")
+
+ val field =
+ s"""
+ |transient java.util.Random $fieldTerm = null;
--- End diff --
`Random` implements `Serializable`. I think we initialize `Random` already
here, remove `transient` and add `final`.
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