n 1 2 sum(length(word)) 71 (@id := id) - id 0 Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter 127.0.0.1 root 9306 1 master-bin.001 939 No 1053 Slave: query ' update t1 set n = n + get_lock('crash_lock', 2)' partially completed on the master and was aborted. There is a chance that your master is inconsistent at this point. If you are sure that your master is ok, run this query manually on the slave and then restart the slave with SET SQL_SLAVE_SKIP_COUNTER=1; SLAVE START; 0 count(*) 10 n 3456