Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/15567#discussion_r84339070
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala
---
@@ -274,12 +274,12 @@ trait Nondeterministic extends Expression {
private[this] var initialized = false
- final def setInitialValues(): Unit = {
- initInternal()
+ final def initializeStatesForPartition(partitionIndex: Int): Unit = {
--- End diff --
I don't want to overload the name `initialize`, which is a little vague,
how about `initStates`? Again, the issue is that even with comments we cannot
force users to initialize it.
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