https://memostack.tistory.com/229
https://nifi.apache.org/docs/nifi-docs/components/org.apache.nifi/nifi-standard-nar/1.12.1/org.apache.nifi.controller.MonitorMemory/
https://community.cloudera.com/t5/Support-Questions/NIFI-Monitoring-processor-and-nifi-Service/m-p/128485
