Search before asking

• I had searched in the issues and found no similar issues.

What happened

in dolphin worker-server, mysql connection number increasing always, which lead mysql server cannot work.

while the mysql connection like below:

What you expected to happen

mysql connection number keep in normal number,

How to reproduce

use MySQL DataSource to perform frequent operations, such as query and create table/delete table/update table.

Anything else

No response

Version

3.0.0-beta-2

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct