Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17546#discussion_r111098128
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/CostBasedJoinReorder.scala
---
@@ -150,12 +148,15 @@ object JoinReorderDP extends PredicateHelper with
Logging {
case (item, id) => Set(id) -> JoinPlan(Set(id), item, Set(), Cost(0,
0))
}.toMap)
+ // Build filters from the join graph to be used by the search
algorithm.
+ val filters = JoinReorderDPFilters.buildJoinGraphInfo(conf, items,
conditions, itemIndex)
--- End diff --
why call it filters? should we name it `planInfo`?
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