Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/14132#discussion_r71623500
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/catalyst/SQLBuilder.scala ---
@@ -356,8 +372,14 @@ class SQLBuilder(logicalPlan: LogicalPlan) extends
Logging {
}
}
+ val broadcastHint = project match {
+ case p @ Project(projectList, Hint("BROADCAST", tables, child)) =>
+ if (tables.nonEmpty) s"/*+ MAPJOIN(${tables.mkString(", ")}) */"
else ""
+ case _ => ""
+ }
build(
"SELECT",
+ broadcastHint,
--- End diff --
That is like a temporary patch, instead of a permanent solution. We need a
clean way to resolve it. Let me find what is the root cause
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