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https://issues.apache.org/jira/browse/AXIS2-5524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15995819#comment-15995819
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Andreas Veithen commented on AXIS2-5524:
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The patch is incomplete because
* the documentation still mentions the cache levels "session" and "producer"
(as well as "consumer");
* the code that parses the removed cache levels is still present.
> JMSSender should not use a shared session or producer
> -----------------------------------------------------
>
> Key: AXIS2-5524
> URL: https://issues.apache.org/jira/browse/AXIS2-5524
> Project: Axis2
> Issue Type: Bug
> Components: JMS transport
> Reporter: Andreas Veithen
> Priority: Critical
> Attachments: AXIS2-5524.patch
>
>
> Depending on the cache level, the JMSConnectionFactory stores a "shared"
> session and/or message producer. These objects are used by the JMSSender (via
> JMSMessageSender). Since sessions and producers are not thread safe, this
> will lead to concurrency issues. Note that initially the JMSListener used a
> similar pattern. This has been corrected [1], but the issue has never been
> addressed for the JMSSender. The concept of "shared" session/producer should
> be eliminated altogether from JMSConnectionFactory.
> [1] http://markmail.org/message/umhenrurlrekk5jh
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