mysql>stop slave;mysql>set global slave_pending_jobs_size_max=20000000;mysql> start slave;

mysql> set global slave_parallel_workers=4;mysql> show variables like 'slave_parallel_workers';+------------------------+-------+| Variable_name | Value |+------------------------+-------+|slave_parallel_workers | 4 |+------------------------+-------+1 row in set (0.00sec)mysql>set global slave_pending_jobs_size_max=1024;mysql> show variables like 'slave_pend%';+-----------------------------+-------+| Variable_name | Value |+-----------------------------+-------+|slave_pending_jobs_size_max | 1024 |+-----------------------------+-------+1 row in set (0.00sec)

mysql> update erp_mkpf set usnam='測(cè)試1864錯(cuò)誤';ERROR 1197 (HY000):Multi-statement transaction required more than 'max_binlog_cache_size' bytes ofstorage; increase this mysqld variable and try againmysql> set global max_binlog_cache_size=8388608000000;Query OK, 0 rowsaffected (0.00 sec)mysql> begin;Query OK, 0 rowsaffected (0.00 sec)mysql> update erp_mkpf set usnam='測(cè)試1864錯(cuò)誤';Query OK, 70466 rowsaffected (0.38 sec)Rows matched:70466 Changed: 70466 Warnings: 0mysql> commit;Query OK, 0 rowsaffected (0.08 sec)

mysql> show slavestatus/GLast_SQL_Errno: 1864Last_SQL_Error: Cannot scheduleevent Update_rows, relay-log name ./HE1-relay-bin.000005, position 494 toWorker thread because its size 8200 exceeds 1024 ofslave_pending_jobs_size_max.