Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/15763#discussion_r86489433
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -977,6 +977,13 @@ class Analyzer(
localPredicateReferences -- p.outputSet
}
+ // SPARK-17348
+ // Report a non-supported case where there exists a correlated
predicate
+ // that is not an equality predicate and the outer reference of the
correlated predicate
+ // is not at the immediate parent operator.
+ def failOnNonEqualityPredicate(p: LogicalPlan): Unit = {
--- End diff --
why define this since it is used only once?
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