https://community.cloudera.com/t5/Support-Questions/Not-able-to-access-NiFi-web-UI/m-p/106403#M69281 <P>if i stopped it shows:</P><P>org.apache.nifi.bootstrap.Command Failed to send shutdown command to port 36917 due to java.net.SocketTimeoutException: Read timed out. Will kill the NiFi Process with PID 14059.</P> Sat, 28 May 2016 18:23:03 GMT iyappan 2016-05-28T18:23:03Z