@nitinchauhan  Sharing details around your dataflow, processor being used, etc...  may help in getting engagement from the community. The output you shared shows a failed connection to the a NiFI rest-api endpoint (/nifi-api/system-diagnostics) because of connection refused.   Details on this processors configurations? What is seen in the logs of the target NiFi which this processor is trying to connect with?   Thanks, Matt ... View more

There is not much information here, could you perhaps share a minimal flow that does not work?   Also what points towards a problem in scheduling (opposed to e.g. wrong url or firewall issue). ... View more