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-rw-r--r--src/mongo/db/pipeline/document_source_exchange.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mongo/db/pipeline/document_source_exchange.h b/src/mongo/db/pipeline/document_source_exchange.h
index f77e5d14bde..ab69ed3b010 100644
--- a/src/mongo/db/pipeline/document_source_exchange.h
+++ b/src/mongo/db/pipeline/document_source_exchange.h
@@ -211,7 +211,8 @@ public:
DiskUseRequirement::kNoDiskUse,
FacetRequirement::kAllowed,
TransactionRequirement::kAllowed,
- LookupRequirement::kNotAllowed};
+ LookupRequirement::kNotAllowed,
+ UnionRequirement::kNotAllowed};
}
boost::optional<DistributedPlanLogic> distributedPlanLogic() final {