@Kiem Nguyen I highly recommend starting a new question in Hortonworks community connection for this. Diagnosing what caused your node to disconnect and how to resolve is a different topic from how to stop a processor with a disconnected node. It would also be helpful to explain what you mean by "overloaded queue" and what makes you feel the size of your queue triggered your node to disconnect. What error did you see in the nifi-app.log on the node that disconnected. Thanks, Matt ... View more

Hello, this post is for ListenUDP, ListenTCP, ListenSyslog, and ListenRELP. The ListenWebSocket processor is implemented differently and does not necessarily follow what is described here. I'm not familiar with the websocket processor, but maybe others have experience with tuning it. ... View more