SERVER-46957 Implement Quiesce Mode for mongos

1 files changed, 10 insertions, 4 deletions

diff --git a/src/mongo/s/mongos_topology_coordinator.h b/src/mongo/s/mongos_topology_coordinator.h
index 903a17aa2ca..708de6a1241 100644
--- a/src/mongo/s/mongos_topology_coordinator.h
+++ b/src/mongo/s/mongos_topology_coordinator.h
@@ -64,13 +64,19 @@ public:
 
     /**
      * We only enter quiesce mode during the shutdown process, which means the
-     * MongosTopologyCoordinator will never need to exit quiesce mode. While in quiesce mode, we
-     * allow operations to continue and accept new operations, but we fail isMaster requests with
-     * ShutdownInProgress. This function causes us to increment the topologyVersion and start
-     * failing isMaster requests with ShutdownInProgress.
+     * MongosTopologyCoordinator will never need to exit quiesce mode. This function causes us to
+     * increment the topologyVersion and start failing isMaster requests with ShutdownInProgress.
      */
     void enterQuiesceMode();
 
+    /**
+     * While in quiesce mode, we will sleep for 100ms. This allows short running operations to
+     * continue. We will also accept new operations, but we fail isMaster requests with
+     * ShutdownInProgress.
+     * TODO SERVER-46958: Modify comment with correct timeout value.
+     */
+    void enterQuiesceModeAndWait(OperationContext* opCtx);
+
     TopologyVersion getTopologyVersion() const {
         stdx::lock_guard lk(_mutex);
         return _topologyVersion;