Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/7564#discussion_r35557423
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/Exchange.scala ---
@@ -47,7 +47,12 @@ case class Exchange(newPartitioning: Partitioning,
child: SparkPlan) extends Una
override def canProcessSafeRows: Boolean = true
- override def canProcessUnsafeRows: Boolean = true
+ override def canProcessUnsafeRows: Boolean = {
+ // Do not use the Unsafe path if we are using a RangePartitioning,
since this may lead to
+ // an interpreted RowOrdering being applied to an UnsafeRow, which
will lead to
+ // ClassCastExceptions at runtime. This check can be removed after
SPARK-9054 is fixed.
--- End diff --
This may be unnecessary now that we support generic getters in UnsafeRows.
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