Github user yangw1234 commented on a diff in the pull request:
https://github.com/apache/spark/pull/15416#discussion_r82562070
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
---
@@ -2189,6 +2189,24 @@ class SQLQuerySuite extends QueryTest with
SharedSQLContext {
}
}
+ test("SPARK-17849: grouping set throws NPE") {
--- End diff --
@rxin done
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