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https://issues.apache.org/jira/browse/PROTON-2029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16831072#comment-16831072
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ASF subversion and git services commented on PROTON-2029:
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Commit 22705b69bec3f7fb87904ff7873ca158b3f3c3bd in qpid-proton-j's branch
refs/heads/master from Robert Gemmell
[ https://gitbox.apache.org/repos/asf?p=qpid-proton-j.git;h=22705b6 ]
PROTON-2029: tweaks #33 to apply the state but only prevent generating the
frame, add clarifying doc comment.
Retains existing order independence (between output processing) to avoid
unlikely but possible breakage of existing uses.
> applying delivery state to a locally-settled delivery can cause erroneous
> disposition frame
> -------------------------------------------------------------------------------------------
>
> Key: PROTON-2029
> URL: https://issues.apache.org/jira/browse/PROTON-2029
> Project: Qpid Proton
> Issue Type: Bug
> Components: proton-j
> Affects Versions: proton-j-0.32.0
> Reporter: Robbie Gemmell
> Priority: Minor
>
> If a delivery has disposition state applied and is locally-settled (and the
> transport output processed), e.g a consumer receiving an unsettled message
> and acknowledging it, then the unexpected act of applying further delivery
> state to the delivery object can result in erroneously emitting another
> disposition frame upon future processing.
> This occurs because applying the state makes adds the delivery to the
> transport work list again, with the process only being gated on prior
> remote-settlement to prevent sending a useless notice of settlement. It
> should also gate on local-settlement to avoid the odd post-settlement state
> application from actually leading to a disposition frame.
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