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https://issues.apache.org/jira/browse/ARTEMIS-2380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16921902#comment-16921902
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ASF subversion and git services commented on ARTEMIS-2380:
----------------------------------------------------------

Commit 4a61d2dc769ebc76b5cb18a240931ad169c0123e in activemq-artemis's branch 
refs/heads/master from Wei Yang
[ https://gitbox.apache.org/repos/asf?p=activemq-artemis.git;h=4a61d2d ]

ARTEMIS-2380 Fix delivering message in the case of consume close


> Fix delivering message in the case of consume close
> ---------------------------------------------------
>
>                 Key: ARTEMIS-2380
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-2380
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>          Components: Broker
>            Reporter: yangwei
>            Priority: Major
>          Time Spent: 10h 50m
>  Remaining Estimate: 0h
>
> When consumer is closed and transaction is not committed or rollbacked, the 
> msg acked is not showed by delivering message but counted by delivering count.
> We add closed consumer if any message is acked but not committed or 
> rollbacked, and remove closed consumer if transaction is finished. In this 
> way, delivering messages can be properly retained.
> During calling hasCosnumer and getConsumerId, there is some race condition 
> that emptyConsumerId is called causing following getConsumerId throws 
> IllegalStateException. Also optimize it without extra effort.



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