Hi Gerd, in that case I think the correct fix is: handler.setLevel(Level.FINE); l.setLevel(Level.SEVERE); This would prevent the confusion when changing the handler level to give more detail appears to have no effect, which took me some time to sort out when I first started using a logging config file. Cheers, Mike -----Original Message----- From: Gerd Petermann [mailto:gpetermann_muenchen@hotmail.com] Sent: 15 March 2021 14:29 To: Development list for mkgmap <mkgmap-dev@lists.mkgmap.org.uk> Subject: Re: [mkgmap-dev] Error in mkgmaps logging class? Hi Mike, not sure if this will help users to use warning level as default. I see +500 warning messages for a single tile in my home area. Most of them are about problems in the data, many of those data "problems" have no effect on the map or are caused by incomplete data. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Mike Baggaley <mike@tvage.co.uk> Gesendet: Montag, 15. März 2021 14:02 An: 'Development list for mkgmap' Betreff: Re: [mkgmap-dev] Error in mkgmaps logging class? HI Gerd/Steve, The current code with the handler set to SEVERE and logger set to WARNING doesn't seem to make a lot of sense. Wouldn't it be better if the default handler level was FINE, so that just logger filters the messages. I think warnings should be allowed through by default as well, so suggest handler.setLevel(Level.FINE); l.setLevel(Level.WARNING); Cheers, Mike -----Original Message----- From: Gerd Petermann [mailto:GPetermann_muenchen@hotmail.com] Sent: 15 March 2021 08:52 To: Steve Ratcliffe <sr@parabola.me.uk>; 'Development list for mkgmap' <mkgmap-dev@lists.mkgmap.org.uk> Subject: [mkgmap-dev] Error in mkgmaps logging class? Hi Steve, Please review: I've noticed that log.isLoggable(Level.WARNING) always returns true when I don't use the -Dconfig.logging option for JRE . This is unexpected as calls to log.warn(...) don't produce any output in this case. The attached simple patch seems to fix this but I don't really understand the code. Maybe you forgot this change in http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=233 ? In class MultiPolygonRelation we have quite a lot of methods which is meant to be skipped if logging is not enabled but because of this bug(?) the code is executed sometimes, maybe with side effects that I don't yet fully understand. Gerd _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev