在5.6基於schema的同步,需配置slave_parallel_workers參數:
mysql> show variables like '%work%'; +-------------------------+-------+ | Variable_name | Value | +-------------------------+-------+ | proxy_protocol_networks | | | skip_networking | OFF | | slave_parallel_workers | 0 | +-------------------------+-------+ 3 rows in set (0.00 sec)
mysql> set global slave_parallel_workers=2
mysql> show variables like '%work%';
+-------------------------+-------+
| Variable_name | Value |
+-------------------------+-------+
| proxy_protocol_networks | |
| skip_networking | OFF |
| slave_parallel_workers | 2 |
+-------------------------+-------+
3 rows in set (0.00 sec)
尤其需要注意一點就是,開啓從站基於schema的同步後,從站的事物執行記錄的binlog與主站記錄的日誌是不同的,也就造成用從站日誌恢復的問題,同時5.6並行複製,主庫也必須是5.6版本,這個有而需要注意