If I forgot to stop collector before start a collector. Then I will get
message the Collector.pid file can not be written.
Then I can not stop collector by the command "sudo bin/chukwa collector
stop". Because start twice will assign new PID and new port to collector.
And the new PID is not written into the Collector.pid file.
And I can not find the PID by the port because the port is not 8080.
Does anyone meet the same problem ? And how to stop collector/agent in this