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https://issues.apache.org/jira/browse/ARTEMIS-3693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17501635#comment-17501635
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Justin Bertram commented on ARTEMIS-3693:
-----------------------------------------
Can you elaborate on how you're triggering an error for the non-transacted
use-case? In my tests with the core protocol the broker just logs the ignored
duplicates. It doesn't return an error to the sender.
> Ignore duplicates instead of returning error
> --------------------------------------------
>
> Key: ARTEMIS-3693
> URL: https://issues.apache.org/jira/browse/ARTEMIS-3693
> Project: ActiveMQ Artemis
> Issue Type: Improvement
> Reporter: Brad Harvey
> Priority: Major
>
> As an Artemis user I want the broker to:
> * Ignore duplicate messages (but still process new messages) that are
> received in the same transaction and successfully commit instead of failing
> to commit the whole transaction and rejecting both the duplicates and new
> messages So that I don't have to implement custom error handling to sort out
> the duplicates from new messages and retry the new messages.
> * Ignore duplicate messages it receives when not transacted instead of
> returning an error to the sender so that I don't have to implement custom
> error handling to skip over the duplicate message.
> The current [duplicate
> detection|https://activemq.apache.org/components/artemis/documentation/latest/duplicate-detection.html]
> returns an error back to producers which forces the producer to implement
> custom error handling to distinguish this error from others.
> This is particularly problematic when multiple messages are sent in the same
> transaction - some may be duplicates while others are not, but they will all
> be rejected. It is difficult for the sender to untangle which is which.
> *Proposed Solution*
> * Add configuration at the address level to silently drop duplicates instead
> of rejecting them. Logging them is OK, but the send / transaction should
> complete successfully.
> * Update
> [documentation|https://activemq.apache.org/components/artemis/documentation/latest/duplicate-detection.html]
> to describe the new option.
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