[jira] [Created] (AMBARI-10440) Manual RU - Client-only services need restart to advertise version

["Antonenko Alexander (JIRA)" <ji...@apache.org>]

Antonenko Alexander created AMBARI-10440:
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             Summary: Manual RU - Client-only services need restart to advertise version
                 Key: AMBARI-10440
                 URL: https://issues.apache.org/jira/browse/AMBARI-10440
             Project: Ambari
          Issue Type: Bug
          Components: ambari-web
    Affects Versions: 2.0.0
            Reporter: Antonenko Alexander
            Assignee: Antonenko Alexander
            Priority: Critical
             Fix For: 2.0.1


Basically, the UI provides no way of restarting Clients (which technically cannot be started because they are not daemons). The only way that a Client can advertise its version is when it is installed, or during a RESTART command. Some clients are part of services that also have masters, so if the service is restarted, then so are the clients and they advertise their version.
However, Oozie, Pig, and Tez are client-only services, so a manual RU needs a way for them to advertise their version.

There are 2 potential solutions.
1. UI - allow client-only services to have a RESTART action
2. Modify the ambari-server set-current command to issue curl calls for all of the clients.

Approach 1 is simpler, but may make the UI seem non-sensical.
Approach 2 is much harder, because the Python script would have to figure out which services need it, and then issue curl calls that include all of the hosts for that Service Component (e.g., Oozie cilent)



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