Github user lresende commented on a diff in the pull request:
https://github.com/apache/spark/pull/11623#discussion_r57098172
--- 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 --
@cloud-fan Exactly, and this generates the erroneous result as described
in the jira if running on 1.6, but works as expected in 2.0. I want to make
sure we enhance the test coverage here, to avoid regressions in the future, so
we can close the jira issue after we get this test scenario into the 2.0
codebase.
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