Github user eatoncys commented on a diff in the pull request:
https://github.com/apache/spark/pull/18810#discussion_r132610861
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -572,6 +572,14 @@ object SQLConf {
"disable logging or -1 to apply no limit.")
.createWithDefault(1000)
+ val WHOLESTAGE_MAX_LINES_PER_FUNCTION =
buildConf("spark.sql.codegen.maxLinesPerFunction")
+ .internal()
+ .doc("The maximum lines of a single Java function generated by
whole-stage codegen. " +
+ "When the generated function exceeds this threshold, " +
+ "the whole-stage codegen is deactivated for this subtree of the
current query plan.")
+ .intConf
+ .createWithDefault(1500)
--- End diff --
I think it applies to other Java programs using JAVA HotSpot VM.
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