Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/20224#discussion_r163773528
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -629,6 +629,14 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val WHOLESTAGE_CODEGEN_USE_ID_IN_CLASS_NAME =
+ buildConf("spark.sql.codegen.useIdInClassName")
+ .internal()
+ .doc("When true, embed the (whole-stage) codegen stage ID into " +
+ "the class name of the generated class as a suffix")
+ .booleanConf
+ .createWithDefault(true)
--- End diff --
Make sense to me.
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