[jira] [Commented] (AMQ-5545) Message order is not preserved across multiple consumers

["Tim Bain (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AMQ-5545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15064352#comment-15064352 ] 

Tim Bain commented on AMQ-5545:
-------------------------------

This is not a bug.  Electing to use message groups is an explicit choice to give up in-order dispatch for messages that are in the group compared with messages that are either not in a group at all or are in another group.

Dispatch will be in-order for all messages within a single group (or for messages that have no group), but there are no mechanisms provided or implied for delaying dispatch/consumption of messages that are not in a given group because an earlier message that's in the group has not yet been dispatched/consumed.

Recommending re-closing.  Abhinav, leave it closed this time around.

> Message order is not preserved across multiple consumers
> --------------------------------------------------------
>
>                 Key: AMQ-5545
>                 URL: https://issues.apache.org/jira/browse/AMQ-5545
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.4.0
>         Environment: The issue is seen on both Linux and Windows.
>            Reporter: Abhinav Sarkari
>
> There are multiple producers sending messages to a queue. There are multiple consumers on this queue.
> I want the consumers to pick messages in the same order as they have been send by the producers.
> The problem with using message group (http://activemq.apache.org/message-groups.html) is that only one consumer can consume these messages at a time. I want all the consumers on the queue to be actively picking the messages.
> In other words, is it possible to have multiple concurrent consumers being part of the message group?



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