Upgrade flink version
In this stage, we should not move forward recklessly, it's better to choose flink-1.13.5 as the new version.
The develop api of flink1.13 has better compatibility, it contains old and new api,
this will help us upgrade the version. And flink cdc[1] requires 1.13 version, it can't work with flink.1.14.
Ok, here my detail steps to upgrade the version.
Step1: Upgrade the flink to 1.13, ensure the original components are available as much as possible.
Step2: In order to let sql and conf job share the same connectors, we need to add new job conf parser, and new core api
Step3: Rich the connectors based on new core api.
Discuss mail link[2]
Issue [3]
[1] https://github.com/ververica/flink-cdc-connectors
[2] https://lists.apache.org/thread/333llsbf3gbn4pdqkynoovr6ly6gwhz2