According to the https://karaf.apache.org/manual/latest/users-guide/provisioning.html. it says
----------------- Right now, Apache Karaf doesn't provide complete upgrade cycle for features. Basically, a feature upgrade means: Uninstall the features first (eventually providing the feature version to uninstall), and the features repository. Register the new version of the features repository and install the features with the target version. ---------------- Does it that the existing service for end user (client) will be out of service? -- View this message in context: http://karaf.922171.n3.nabble.com/Karaf-Feature-for-an-Application-tp4040379p4040492.html Sent from the Karaf - User mailing list archive at Nabble.com.
