SERVER-28013 Ensure that last op for client only moves forward

1 files changed, 7 insertions, 3 deletions

diff --git a/src/mongo/db/repl/repl_client_info.h b/src/mongo/db/repl/repl_client_info.h
index 4c01119b794..3c81953d65f 100644
--- a/src/mongo/db/repl/repl_client_info.h
+++ b/src/mongo/db/repl/repl_client_info.h
@@ -45,13 +45,17 @@ class ReplClientInfo {
 public:
     static const Client::Decoration<ReplClientInfo> forClient;
 
-    void setLastOp(const OpTime& op) {
-        _lastOp = op;
-    }
+    void setLastOp(const OpTime& op);
+
     OpTime getLastOp() const {
         return _lastOp;
     }
 
+    // Resets the last op on this client; should only be used in testing.
+    void clearLastOp_forTest() {
+        _lastOp = OpTime();
+    }
+
     void setLastSnapshot(SnapshotName name) {
         _lastSnapshot = name;
     }