[mysql] MysqlParallelSource Stability Improvement

[leonardBang]

• 1. Skip binlog reading, if low == high
• 2. If concurrency=1, there is no need to wait with checkpoint. (done) [mysql] Optimize the checkpoint be optional under single parallelism #365
• 3. Improve the log and clean up debezium logs
• 4. Investigate rds master/standby switching scenarios can works or not
• 5. Bind the DebeziumReader life circle with split
• 6. Investigate MySqlParallelSource could use single serverId or not

[PatrickRen]

Closing this issue because it was created before version 2.3.0 (2022-11-10). Please try the latest version of Flink CDC to see if the issue has been resolved. If the issue is still valid, kindly report it on Apache Jira under project Flink with component tag Flink CDC. Thank you!