[OASIS Issue Tracker] Updated: (MQTT-10) Should Qos=0 retained messages be persisted in the server?

[ http://tools.oasis-open.org/issues/browse/MQTT-10?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Richard Coppen updated MQTT-10:
-------------------------------

    Proposal: 
The Server SHOULD retain QoS 0 messages, but MAY discard them at any time. In the latter case there will be no retained message.

Note to editors: 
For completeness, consider providing a link in Section 2.2.2.3 "Retained" to  Section 4.1 "Store" to help reader with clarity around store.

  was:
Retained messages MUST be stored according to the server's capability to store messages as defined in the <new section on QoS and storage>.

Note to editors: non-section considered, however valid use cases exist for Qos 0 retained messages.


> Should Qos=0 retained messages be persisted in the server?
> ----------------------------------------------------------
>
>                 Key: MQTT-10
>                 URL: http://tools.oasis-open.org/issues/browse/MQTT-10
>             Project: OASIS Message Queuing Telemetry Transport (MQTT) TC
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 3.1.1
>         Environment: MQTT server
>            Reporter: Andrew Banks
>             Fix For: 3.1.1
>
>
> The current specification states that :
> Retained messages should be kept over restarts of the server.
> Is this correct even for Qos=0 retained publications?

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