Teiid DatabaseAppender JPA perisist Command log consume high CPU

I have 4 - 5 concurrent client query to Portfolio VDB, this cause log DatabaseAppender JPA perisist Command log thread consume high CPU. In my test, one log threads always swallow high CPU, if the concurrent client query more than 10, it swallow 100% cpu.

[1] have detailed reproduce steps, including thread dumps.

[1] https://github.com/kylinsoong/teiid-samples/tree/master/command-logging-highcpu