Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/19480#discussion_r144440892
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
---
@@ -1010,6 +1079,8 @@ object CodeGenerator extends Logging {
// This is the value of HugeMethodLimit in the OpenJDK JVM settings
val DEFAULT_JVM_HUGE_METHOD_LIMIT = 8000
+ val MERGE_SPLIT_METHODS_THRESHOLD = 3
--- End diff --
Let's add a short comment for this too.
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