Enhance support for MySQL XA connections
Project: JBoss Transaction Manager
Issue Type: Patch
Security Level: Public (Everyone can see)
Affects Versions: 4.6.1
Fix For: 4.6.1.CP01
As generally accepted, the MySQL support for XA is somewhat broken.
If you do the following:
- begin a transaction
- get an XAConnection from MySQL,
- get a connection from the XAC
- do some operations,
- close the connection
- get another connection from XAC
- try to do some operations -> MYSQL throws an exception stating that it does not
support a XA START RESUME
But, this leads to certain undesirable behavior inside the JBOSS JTA codebase. It is
resulting in not calling XAC.close(). We are using a custom pool for limiting the number
of XAConnections we create - which gets maxed out because of this. Am attaching a patch
that seems to help out.
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