Hot standby slave lagged behind primary
A hot standby system receives transaction records from a primary and replays them as they occur, although records that do not contain application data may not be immediately replayed (e.g., "bookkeeping" records). The primary stone did not correctly flush the tranlog for each tranlog record, so the standby system was behind by at least one tranlog record from the primary system.
Last updated: 11/26/14