[jboss-jira] [JBoss JIRA] Closed: (JBAS-1402) Transaction Recovery

Transaction Recovery -------------------- Key: JBAS-1402 URL: http://jira.jboss.com/jira/browse/JBAS-1402 Project: JBoss Application Server Issue Type: Task Security Level: Public(Everyone can see) Components: Transaction Manager Affects Versions: JBossAS-4.0.1 Final Reporter: Adrian Brock Implement optional transaction recovery The simplest mechanism is to do this is with a local database using the last resource gambit where during its "prepare" it logs the XID in a table. If this last resource fails to commit, recovery will not find the transaction in the table which means it will rollback the whole transaction. This has limitations where a different local resource is required within the transaction but not this local database used as the recovery log. Another implementation is a local file. Though more complicated it should give superior performance. But, it does not work well with the last resource gambit, e.g. you cannot tell whether the jdbc commit() suceeded or failed if it crashes just at the point of this invocation before the result is returned from the db. The other work required: 1) Possibly, simplify the dependencies in the JCA module so we can run the recovery earlier. Currently the RARs need the transaction manager at deployment time. The recovery service needs to be an external service depending upon both the tm and the managed connection factories. At least this will require a GUID for the XID so we can avoid duplicates between unrecovered XIDs and any new XIDs created before recovery is complete. 2) JBossMQ needs to implement XAResource.recover()