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| -rw-r--r-- | sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/collect.scala | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/collect.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/collect.scala index ac2cefaddc..896ff61b23 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/collect.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/collect.scala @@ -54,6 +54,10 @@ abstract class Collect extends ImperativeAggregate { override def inputAggBufferAttributes: Seq[AttributeReference] = Nil + // Both `CollectList` and `CollectSet` are non-deterministic since their results depend on the + // actual order of input rows. + override def deterministic: Boolean = false + protected[this] val buffer: Growable[Any] with Iterable[Any] override def initialize(b: MutableRow): Unit = { |