Github user ioana-delaney commented on a diff in the pull request:
https://github.com/apache/spark/pull/15363#discussion_r85477511
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -373,6 +373,11 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val STARJOIN_OPTIMIZATION =
SQLConfigBuilder("spark.sql.starJoinOptimization")
+ .doc("When true, it enables join reordering based on star schema
detection. ")
+ .booleanConf
+ .createWithDefault(false)
--- End diff --
Do you suggest to have another internal config that will be enabled for
testing purposes?
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