On 12/16/2021 2:27 PM, Bill Ross via jetty-users wrote:
It also seemed to explain why this java startup arg doesn't cause an error with no log4j jar in my classpath:

    ‐Dlog4j2.formatMsgNoLookups=True

Adding a system property to Java startup will not *directly* cause any problems. For it to be a problem, something in the application would need to be looking for that property, and that component would need to explicitly do something (like throw an exception) to cause a problem. If nothing in the application is looking for that property, then it won't matter if it's there.

Thanks,
Shawn
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