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-rw-r--r--src/mongo/db/pipeline/document_source_change_stream.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mongo/db/pipeline/document_source_change_stream.cpp b/src/mongo/db/pipeline/document_source_change_stream.cpp
index 1049a9b04aa..153bc685a70 100644
--- a/src/mongo/db/pipeline/document_source_change_stream.cpp
+++ b/src/mongo/db/pipeline/document_source_change_stream.cpp
@@ -121,6 +121,7 @@ StageConstraints DocumentSourceOplogMatch::constraints(Pipeline::SplitState pipe
FacetRequirement::kNotAllowed,
TransactionRequirement::kNotAllowed,
LookupRequirement::kNotAllowed,
+ UnionRequirement::kNotAllowed,
ChangeStreamRequirement::kChangeStreamStage);
constraints.isIndependentOfAnyCollection =
pExpCtx->ns.isCollectionlessAggregateNS() ? true : false;