executable.rb in mongo-2.17.0

- old
+ new

@@ -41,9 +41,13 @@
                       end
                     else
                       session.pin_to_service(connection.service_id)
                     end
                   end
+
+                  if session.snapshot? && !session.snapshot_timestamp
+                    session.snapshot_timestamp = result.snapshot_timestamp
+                  end
                 end
                 process_result(result, connection)
               end
             end
           end