HyukjinKwon commented on a change in pull request #32550:
URL: https://github.com/apache/spark/pull/32550#discussion_r640503378
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/hints.scala
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@@ -172,6 +172,14 @@ case object NO_BROADCAST_HASH extends JoinStrategyHint {
override def hintAliases: Set[String] = Set.empty
}
+/**
+ * An internal hint to encourage shuffle hash join, used by adaptive query
execution.
+ */
+case object PREFER_SHUFFLE_HASH extends JoinStrategyHint {
Review comment:
Can we add some user-facing docs?
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