[jboss-jira] [JBoss JIRA] Updated: (JBMESSAGING-375) Grouping of messages with JMSXGroupId

[Jeff Mesnil (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBMESSAGING-375?page=all ]

Jeff Mesnil updated JBMESSAGING-375:
------------------------------------

    Attachment: patch-JBMESSAGING-375.txt

updated Stian's patch for JBoss Messaging 1.4.0 (based on r3190):
- base class is RoundRobinDistributor
- "grouping" round robin algorithm is done in GroupingRoundRobinDistributor
- associated tests are in GroupingRoundRobinDistributorTest
- put test code common to RRDTest and GroupingRRDTest into
  SimpleReferenceableReceiver class
- added support to reset bound receiver by setting JMSXGroupSeq to 0

some caveats:
- GroupingRRD's algorithm is brittle and depends on a lot of internals from
RRD which should not be exposed
  -> maybe grouping should be handled directly by RRD?
- GroupingRRD is not used by MessagingQueue (still using RRD)

> Grouping of messages with JMSXGroupId
> -------------------------------------
>
>                 Key: JBMESSAGING-375
>                 URL: http://jira.jboss.com/jira/browse/JBMESSAGING-375
>             Project: JBoss Messaging
>          Issue Type: Feature Request
>            Reporter: Tim Fox
>         Assigned To: Tim Fox
>             Fix For: 2.0.0 Beta 1
>
>         Attachments: jbmessaging-375.patch, patch-JBMESSAGING-375.txt
>
>   Original Estimate: 1 week
>  Remaining Estimate: 1 week
>
> We should add an ability to group messages by JMSXGroupID, so any messages with the same group id always go to the same consumer on a queue.
> This would be useful when having competing consumers on a queue and you want each consumer to handle all messages with a particular value of JMSXGroupID

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