Installed a MoM 1.4.2 ran a group.json test. `dcos package install marathon --package-version=1.4.2`
Uninstalled... and installed MoM 1.4.1 (without cleaning up zk)... this failed to startup.. discovered in the logs that it was failing.
Went to DCOS to uninstall MoM from marathon. The destroy app failed with a timeout. Looked at mesos... no app running. Look at marathon /queue... to app in queue. look at marathon /apps there is a marathon-user app listed.
This marathon thinks it has an app that mesos doesn't have.