Github user ioana-delaney commented on a diff in the pull request:
https://github.com/apache/spark/pull/17546#discussion_r110318621
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -736,6 +736,12 @@ object SQLConf {
.checkValue(weight => weight >= 0 && weight <= 1, "The weight value
must be in [0, 1].")
.createWithDefault(0.7)
+ val JOIN_REORDER_DP_STAR_FILTER =
+ buildConf("spark.sql.cbo.joinReorder.dp.star.filter")
+ .doc("Applies star-join filter heuristics to cost based join
enumeration.")
+ .booleanConf
+ .createWithDefault(false)
--- End diff --
@gatorsmile Regardless of the default value, I still want to control the
filters with their own knobs. The filters are applied on top of the join
enumeration. They need to have their own control.
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