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-rw-r--r--src/mongo/db/query/query_knobs.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mongo/db/query/query_knobs.cpp b/src/mongo/db/query/query_knobs.cpp
index 69936020c51..73f7e618769 100644
--- a/src/mongo/db/query/query_knobs.cpp
+++ b/src/mongo/db/query/query_knobs.cpp
@@ -79,4 +79,6 @@ MONGO_EXPORT_SERVER_PARAMETER(internalDocumentSourceLookupCacheSizeBytes, int, 1
MONGO_EXPORT_SERVER_PARAMETER(internalQueryPlannerGenerateCoveredWholeIndexScans, bool, false);
MONGO_EXPORT_SERVER_PARAMETER(internalQueryIgnoreUnknownJSONSchemaKeywords, bool, false);
+
+MONGO_EXPORT_SERVER_PARAMETER(internalQueryProhibitBlockingMergeOnMongoS, bool, false);
} // namespace mongo