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The build has not been completed and is still running build...
Build stop does not work.
2020-02-24 08:25:44,826 WARN - Job still exists on job node and cancel command is issued (job id: 34784d52-19a0-41af-88b9-5a3eda19be82, build id: 25188298, job node: SRDG3605:8816)...
How can I approach this problem?
Is the running step executing an external command? If yes, it looks like that the command does not respond to SIGTERM. Please kill the command manually from terminal to see if build can be stopped.
How can I delete it manually?
If you know the command the hanging step is running, you can login to the agent machine running that step and run "ps -ef|grep " to find the command process id and kill it with "-9" option. You probably need to do it as the same OS user running QB agent.