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https://issues.apache.org/jira/browse/QPID-5337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15415415#comment-15415415
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Justin Ross commented on QPID-5337:
-----------------------------------

[~gsim], it doesn't look like this patch made it in.  Do you remember what 
happened?

> Memory leak in python client - unacked messages kept when no accept is 
> necessary
> --------------------------------------------------------------------------------
>
>                 Key: QPID-5337
>                 URL: https://issues.apache.org/jira/browse/QPID-5337
>             Project: Qpid
>          Issue Type: Bug
>          Components: Python Client
>    Affects Versions: 0.22
>         Environment: RHEL 6.4
>            Reporter: Renier Morales
>            Assignee: Gordon Sim
>              Labels: memory-leak, performance
>
> We have found with python-qpid-0.22 that you have to acknowledge all messages 
> received, even if you have subscribed using mode:browse (where ack does not 
> apply) or even if you have subscribed to an unreliable topic exchange (where 
> ack is not needed).
> In these cases, if you don't acknowledge the messages received, memory is 
> leaked, due to the accumulation of messages in an internal unacked list at 
> the client.
> More information at this qpid-users mailing list thread:
> http://qpid.2158936.n2.nabble.com/Use-of-mode-browse-and-session-acknowledge-in-topic-exchanges-td7600571.html#a7600642



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