[jboss-user] Which HA-JMS ConnectionFactory?
gturner at unzane.com
Mon Nov 22 15:57:29 EST 2010
How should I code transacted HA-JMS sender and receiver non-EJB clients
deployed within a cluster of JBoss containers?
The question is tricky because: we're using JBoss 4.2.3 in "all"
configuration, but would like to upgrade to 5.1 without code changes;
the clients are SAR deployments of custom MBeans; no EJB/MDB whatsoever.
Various informal documentation I've been able to scrape from the web
suggests looking up the ConnectionFactory from local (non-HA) JNDI with
name "java:/JmsXA" and looking up the Queue from HA-JNDI.
JmsXA is not working because evidently (and as it's name suggests) it is
an XAConnectionFactory, and the code:
QueueSession session =
…is not actually honoring the transcted/mode arguments (javadoc: "usage
undefined"¹). This becomes a problem when the receiver code issues
session.commit() or session.rollback() which raise the exception
"TransactionInProgressException: Should not be call from a XASession".
I've searched for examples of using XASession from a non-EJB client and
haven't come up with anything. I suppose I could try experimenting with
session.getXAResource², but first problem faced would be how to allocate
Xid objects, and then I imagine there will be failures because the
underlying DataSource isn't XA (MySQL Cluster/NDB storage engine doesn't
Avoiding the XA mess and trying ConnectionFactory lookup with JNDI name
"java:/ConnectionFactory" isn't working either: this object only exists
on the master nodes local JNDI, it's not exported to HA-JNDI. I suppose
I'll have to do remote JNDI connection to the master node? That sounds
awful since I'll also need to detect and reconnect on master node
Does JBoss 5.1 / JBoss Messaging "fix" any of this? I could change
targets but I'm having massive interoperability problems between 4.2 and
5.1 in other applications (several clusters with total of 300+ JBoss
application servers, "fork-lift" upgrade of our applications isn't
Any advice would be much appreciated!
Gerald Turner Email: gturner at unzane.com JID: gturner at unzane.com
GPG: 0xFA8CD6D5 21D9 B2E8 7FE7 F19E 5F7D 4D0C 3FA0 810F FA8C D6D5
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