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Posted to dev@qpid.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2013/06/18 19:24:20 UTC
[jira] [Commented] (QPID-4934) [Java Client] XASessionImpl creates
three AMQP sessions, only one is XA... why?
[ https://issues.apache.org/jira/browse/QPID-4934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13686982#comment-13686982 ]
ASF subversion and git services commented on QPID-4934:
-------------------------------------------------------
Commit 1494214 from [~godfrer]
[ https://svn.apache.org/r1494214 ]
QPID-4934 : [Java XA] Stop redundant session creation for XA Sessions, improve logging for XA
> [Java Client] XASessionImpl creates three AMQP sessions, only one is XA... why?
> -------------------------------------------------------------------------------
>
> Key: QPID-4934
> URL: https://issues.apache.org/jira/browse/QPID-4934
> Project: Qpid
> Issue Type: Bug
> Components: Java Client
> Reporter: Rob Godfrey
>
> XASessionImpl creates three AMQP Sessions...
> 1) it calls the constructor of the superclass AMQSession_0_10, which does this:
> {code}
> _qpidConnection = qpidConnection;
> if (name == null)
> {
> _qpidSession = _qpidConnection.createSession(1);
> }
> else
> {
> _qpidSession = _qpidConnection.createSession(name,1);
> }
> {code}
> ... this session is not XA.
> 2. Immediately after calling the super's constructor it calls createSession() which does this:
> {code}
> _qpidDtxSession = getQpidConnection().createSession(0,true);
> _qpidDtxSession.setSessionListener(this);
> _qpidDtxSession.dtxSelect();
> {code}
> this session is XA
> 3. Finally if you call getSession(), getQueueSession() or getTopicSession(), it creates a third (non-XA) session
> {code}
> public Session getSession() throws JMSException
> {
> if (_jmsSession == null)
> {
> _jmsSession = getAMQConnection().createSession(true, getAcknowledgeMode());
> }
> return _jmsSession;
> }
> {code}
> Why do we need three separate sessions, with two of them being non-XA?
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