SERVER-43719 Load RWC defaults from persisted values during startup

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mongo/s/server.cpp b/src/mongo/s/server.cpp
index 2db78c6db78..faa5ccf183b 100644
--- a/src/mongo/s/server.cpp
+++ b/src/mongo/s/server.cpp
@@ -579,6 +579,13 @@ ExitCode runMongosServer(ServiceContext* serviceContext) {
             ->getBalancerConfiguration()
             ->refreshAndCheck(opCtx)
             .transitional_ignore();
+
+        try {
+            ReadWriteConcernDefaults::get(serviceContext).refreshIfNecessary(opCtx);
+        } catch (const DBException& ex) {
+            warning() << "Failed to load read and write concern defaults at startup"
+                      << causedBy(redact(ex.toStatus()));
+        }
     }
 
     startMongoSFTDC();