[JBoss JIRA] Created: (JBTM-226) Possible race condition between top-down and bottom-up recovery
by Mark Little (JIRA)
Possible race condition between top-down and bottom-up recovery
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Key: JBTM-226
URL: http://jira.jboss.com/jira/browse/JBTM-226
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP4
Environment: Mac OS X, JDK 1.4.2.
Reporter: Mark Little
Assigned To: Mark Little
Priority: Critical
In local JTA recovery for non-serializable XAResources, the XAResourceRecovery implementation is needed to obtain a new XAResource. If a new resource isn't obtained (because the XAResourceRecovery instances haven't all been triggered yet), top-down recovery retries on subsequent recovery sweeps. Meanwhile, bottom up recovery can kick in and use an XAResource from a XAResourceRecovery that is now available and fail to locate any information on the transaction that will drive it top-down. Upon failing to find the transaction, it uses presumed abort and rolls back the instance, when in fact it should wait and commit it. But it doesn't do that until several phases have passed, and in which case most of the time top-down recovery will have re-run, found the XAResource and committed the transaction.
I'm fairly sure this is a race condition and does exist, but am still checking. Work around exists at the moment though.
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15 years, 4 months
[JBoss JIRA] Created: (JBTM-238) Add property to disable warning about multiple 1PC resources
by Mark Little (JIRA)
Add property to disable warning about multiple 1PC resources
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Key: JBTM-238
URL: http://jira.jboss.com/jira/browse/JBTM-238
Project: JBoss Transaction Manager
Issue Type: Feature Request
Security Level: Public (Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP5
Reporter: Mark Little
Assigned To: Mark Little
Currently we always print a warning on multiple 1PC resources. Support for that has to be explicitly enabled. We print the warning in case the user set the wrong property, doesn't know the implications, forgot to set it back etc. For those users who never make mistakes and always know the implications, maybe we should have another property that basically means "only output warning once per VM run".
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15 years, 7 months