Terminate a execution of a nifi group

[836353613 <83...@qq.com.INVALID>]

Hi, I would like to ask the following question: I sent a request to a nifi group of server B via Java application on server A. While the nifi group of server B is executing for my first request, I sent another request to the same nifi group of server B via Java application on server A. At this time, I would like to terminate the execution of nifi group of server B for my first request, but without affecting the execution of my second request. I've searched for the relevant process and it doesn't seem to work, is there a better way? Looking forward to your reply, thanks! Best regards, Ada