Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/11623#discussion_r57098667
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/DatasetAggregatorSuite.scala ---
@@ -206,4 +216,12 @@ class DatasetAggregatorSuite extends QueryTest with
SharedSQLContext {
ds.groupByKey(_.b).agg(ComplexBufferAgg.toColumn),
("one", 1), ("two", 1))
}
+
+ test("SPARK-12555 - data is not corrupted after input data is
reordered") {
--- End diff --
yea, but we need to make the test name describe the problem more clearly,
how about `SPARK-12555 - result should not be corrupted after input columns are
reordered`?
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