Hi,   you can check your Nifi resources, specifically the Java Heap size found in "bootstrap.conf" file and increase that, please check this for Nifi performance best practices HDF/CFM NIFI Best practices for setting up a high ... - Cloudera Community .    Best Regards, ... View more

We don't support Mosquitto.   That is an open source Eclipse project   https://mosquitto.org/   You can log to topics https://mosquitto.org/man/mosquitto-conf-5.html   https://www.datainmotion.dev/2019/12/iot-series-minifi-agent-on-raspberry-pi.html https://community.cloudera.com/t5/Community-Articles/MQTT-with-Apache-NiFi/ta-p/248016   ... View more