Flink CDC里再跑又不会报错怎么回事？

Flink CDC里A slave with the same server_uuid/server_id as this slave has connected to the master; the first event 'itpuxdb-binlog.003370' at 350718958, the last event read from '/mysql/log/3306/binlog/itpuxdb-binlog.003370' at 487097941, the last byte read from '/mysql/log/3306/binlog/itpuxdb-binlog.003370' at 487097941. Error code: 1236; SQLSTATE: HY000. idea 里面运行，initial模式。第一次启动跑完数据后关掉，再启动一次就会报这个错。把ck删除，再跑又不会报错怎么回事？