Actually, it's correct for Karaf 3, however Karaf 4 provides features lifecycle.

What you can do is an alias to update a feature, performing the corresponding commands (I created a Jira about that already).

Regards
JB

On 05/19/2015 05:15 PM, hsinchen wrote:
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?



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