Github user sddyljsx commented on a diff in the pull request:
https://github.com/apache/spark/pull/21859#discussion_r208803622
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/ShuffleExchangeExec.scala
---
@@ -294,7 +296,12 @@ object ShuffleExchangeExec {
sorter.sort(iter.asInstanceOf[Iterator[UnsafeRow]])
}
} else {
- rdd
+ part match {
+ case partitioner: RangePartitioner[InternalRow @unchecked, _]
--- End diff --
```
def prepareShuffleDependency(
rdd: RDD[InternalRow],
outputAttributes: Seq[Attribute],
newPartitioning: Partitioning,
serializer: Serializer,
sparkContext: SparkContext = null): ShuffleDependency[Int,
InternalRow, InternalRow] = {
```
the rdd is defined as RDD[InternalRow], so we must match type argument here
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