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From "Ted Ross (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (QPID-4543) QMF queueMoveMessages method returns "InvalidParameter" exception when there are simply no messages available to move from the source queue - this is confusing.
Date Mon, 21 Jan 2013 17:54:12 GMT

     [ https://issues.apache.org/jira/browse/QPID-4543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Ross reassigned QPID-4543:
------------------------------

    Assignee: Ted Ross
    
> QMF queueMoveMessages method returns "InvalidParameter" exception when there are simply
no messages available to move from the source queue - this is confusing.
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: QPID-4543
>                 URL: https://issues.apache.org/jira/browse/QPID-4543
>             Project: Qpid
>          Issue Type: Bug
>          Components: C++ Broker
>    Affects Versions: 0.18
>         Environment: QMF
>            Reporter: Fraser Adams
>            Assignee: Ted Ross
>            Priority: Minor
>
> QMF queueMoveMessages method returns "InvalidParameter" exception when there are simply
no messages available to move from the source queue - this is confusing.
> Other queue management commands (such as purge and reroute on the queue object) don't
object when there are no messages to move but queueMoveMessages barfs with InvalidParameter.
> This is inconsistent and it's pretty unhelpful, I spent about an hour checking over my
code and looking through the broker code thinking I'd messed up the arguments. When I finally
got round to actually adding some messages "just to see" it actually worked. Perhaps I should
have tried that sooner, but as I say purge and reroute don't behave this way so it was fairly
reasonable to assume I'd done something wrong...
> I personally think that queueMoveMessages should behave the same as purge and reroute
and attempt to move whatever. It should only send back InvalidParameter if one of the parameters
is actually invalid. It could be argued that trying to move zero messages is invalid, but
a qty value of 0 means "all messages" and all of zero is zero.

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