I am also suffering from IllegalExceptions (posted here where you can see my log file )
Following this thread has led me to thinking there is an issue with MQTT. I installed mqtt 2.4.0 via PaperUI and have been using that fine.
However following the above checking cpu usage etc I have enabled debugging and my logs are now full of:
2019-01-07 18:35:03.121 [DEBUG] [core.karaf.internal.FeatureInstaller] - Installed 'openhab-binding-mqtt1'
2019-01-07 18:35:51.559 [DEBUG] [core.karaf.internal.FeatureInstaller] - Running scheduled sync job
2019-01-07 18:36:00.364 [DEBUG] [core.karaf.internal.FeatureInstaller] - Installed 'openhab-binding-mqtt1'
2019-01-07 18:36:51.566 [DEBUG] [core.karaf.internal.FeatureInstaller] - Running scheduled sync job
2019-01-07 18:37:00.392 [DEBUG] [core.karaf.internal.FeatureInstaller] - Installed 'openhab-binding-mqtt1'
The above is popping up every minute. I’ve never attempted to install mqtt1, how do I stop it?
I have tried enabling legacy but still the same loop. I don’t want to remove mqtt 2.4 as I have a weather station integrated to a site map and it’s working fine.
Any help would be appreciated
Thanks