1 files changed, 5 insertions, 0 deletions
diff --git a/src/mongo/s/server.cpp b/src/mongo/s/server.cpp
index c43f6528798..3ac128f4794 100644
--- a/src/mongo/s/server.cpp
+++ b/src/mongo/s/server.cpp
@@ -426,6 +426,11 @@ Status initializeSharding(OperationContext* opCtx) {
         return status;
     }
 
+    status = preWarmConnectionPool(opCtx);
+    if (!status.isOK()) {
+        return status;
+    }
+
     Grid::get(opCtx)->setShardingInitialized();
 
     return Status::OK();