Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19811#discussion_r156874184
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
---
@@ -154,6 +154,44 @@ class CodegenContext {
val mutableStates: mutable.ArrayBuffer[(String, String, String)] =
mutable.ArrayBuffer.empty[(String, String, String)]
+ // An map keyed by mutable states' types holds the status of
mutableStateArray
+ var mutableStateArrayMap: mutable.Map[String, MutableStateArrays] =
+ mutable.Map.empty[String, MutableStateArrays]
+
+ // An map keyed by mutable states' types holds the current name of the
mutableStateArray
+ // into which state of the given key will be compacted
+ var mutableStateArrayCurrentNames: mutable.Map[String, String] =
+ mutable.Map.empty[String, String]
+
+ // An array holds the code that will initialize each element of the
mutableStateArray
+ var mutableStateArrayInitCodes: mutable.ArrayBuffer[String] =
--- End diff --
why var?
---
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