After the task runs for a period of time, no exception is thrown, but no data is synchronized

[qianchutao]

Environment :

• Flink version : 1.14.0
• Flink CDC version: 2.2.3-snaphot
• Database and version: mysql5.7

Additional Description Using flinkCDC 2.3-Snaphot to synchronize mysql data, multiple tables were synchronized at a time. After the task ran for a period of time, no data was synchronized, and the task was not thrown. After checking the log, it was found that the full synchronization was stuck