Created attachment 34236 [details] patch against trunk. I set "-Duser.language=ja". The Log level is always output in English. This means my setting is ignored. The Log level should be localized.
Thanks for the report. The fix will be in : - 9.0.x for 9.0.0.M11 onwards - 8.5.x for 8.5.6 onwards - 8.0.x for 8.0.38 onwards - 7.0.x for 7.0.73 onwards