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From "Justin Ross (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-2703) Transaction Rollback/Recover does not restore consumer credit
Date Thu, 17 Nov 2011 17:57:51 GMT

    [ https://issues.apache.org/jira/browse/QPID-2703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13152161#comment-13152161
] 

Justin Ross commented on QPID-2703:
-----------------------------------

Reviewed by Rajith.  Approved for 0.14.
                
> Transaction Rollback/Recover does not restore consumer credit
> -------------------------------------------------------------
>
>                 Key: QPID-2703
>                 URL: https://issues.apache.org/jira/browse/QPID-2703
>             Project: Qpid
>          Issue Type: Bug
>          Components: Java Broker
>    Affects Versions: 0.6, 0.8, 0.10, 0.12, 0.14, 0.15
>            Reporter: Martin Ritchie
>            Assignee: Keith Wall
>             Fix For: 0.15
>
>
> When a transaction rollback/recover occurs on the 0-8/0-9/0-91 code path the messages
are put back on to the queue but the subscriber is not credited for them. This can be seen
with a small prefetch. The credit is lost and the client starves. Adding a restoreCredit call
in the message release will address this issue.
> The same issue exists in 0-10 code path but for *different* reasons.  On 0-10, a client
is required to complete commands.  The Java client currently fails to complete the message.transfer
commands that correspond to those messages that must be returned to the Broker due to the
rollback/recover and for this reason the Brokers are failing to recredit.   This problem is
evident when using the Java Broker, but is masked when using the CPP Broker (by a credit window
issue that results in the Broker expanding credit window beyond the requested limit).

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