CLI doesnt seem to be releasing everything

[IDispose]

Confluent CP 4.0 installed on CentoOS 7.2
After installation started
confluent start schema-reigstry

Played with producers and consumers

confluent stop
confluent destroy

Tried restarting

confluent schema-registry

Got, Error starting zookeeper

confluent log zookeeper indicates that java coundnt bind to port 2181 because it's already in use.

Had to kill the 2 java processes holding on to 2181 and 9092.

[kkonstantine]

Were the processes that you had to explicitly kill long running? Or they just ran for a short period of time?
From the ports these processes corresponded to zookeeper and kafka. A certain CLI instance controls only the processes that manages itself.

To troubleshoot more, try next time running confluent current to access the directory where CLI stores all its descriptors. If the metadata there do not match the running instances CLI won't be able to stop the running processes.