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[SPARK-25144][SQL][TEST] Free aggregate map when task ends #22155

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[SPARK-25144][SQL][TEST] Free aggregate map when task ends #22155

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8 changes: 8 additions & 0 deletions sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -2852,4 +2852,12 @@ class SQLQuerySuite extends QueryTest with SharedSQLContext {
spark.sql(s"select * from spark_25084 distribute by ($distributeExprs)").count === count)
}
}

test("SPARK-25144 'distinct' causes memory leak") {
val ds = List(Foo(Some("bar"))).toDS
val result = ds.flatMap(_.bar).distinct
result.rdd.isEmpty
}
}

case class Foo(bar: Option[String])