[jboss-jira] [JBoss JIRA] Commented: (JBAS-4481) Transaction timeouts leave garbage Status.ROLLEDBACK UserTransaction object bound to the thread

[Jonathan Halliday (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBAS-4481?page=comments#action_12365532 ] 
            
Jonathan Halliday commented on JBAS-4481:
-----------------------------------------

Per Andy Miller's suggestion I took a look at CachedConnectionValve. This is the interceptor that should catch poorly behaved apps trying to return Threads to the pool with open connections or unresolved transactions. However, it will be seeing a transaction in state STATUS_ROLLEDBACK, which it does not know how to deal with. It should really call rollback in this case (and expect rollback to throw an IllegalStateException). However, the application code should not be giving it a dirty Thread in the first place. If the application starts a transaction it should always call commit, rollback or suspend before surrendering the Thread. The JBossTS will only disassociate the transaction from the Thread on these calls, even if it's been ended by another Thread.

> Transaction timeouts leave garbage Status.ROLLEDBACK UserTransaction object bound to the thread
> -----------------------------------------------------------------------------------------------
>
>                 Key: JBAS-4481
>                 URL: http://jira.jboss.com/jira/browse/JBAS-4481
>             Project: JBoss Application Server
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Transaction Manager
>    Affects Versions: JBossAS-4.2.0.GA
>            Reporter: Gavin King
>         Assigned To: Gavin King
>            Priority: Blocker
>             Fix For: JBossAS-4.2.1.CR1
>
>         Attachments: test4481.tar
>
>
> If a transaction timeout occurs, the UserTransaction object does not get cleaned up from the thread, even after the request ends and the thread returns to the pool. Future requests will not be able to begin() a transaction, since the STATUS_ROLLEDBACK UserTransaction throws this exception:
> Caused by: javax.transaction.NotSupportedException
> 	at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.begin(BaseTransaction.java:79)
> 	at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.begin(BaseTransactionManagerDelegate.java:77)
> 	at org.jboss.tm.usertx.client.ServerVMClientUserTransaction.begin(ServerVMClientUserTransaction.java:124)
> 	at org.jboss.seam.transaction.UTTransaction.begin(UTTransaction.java:29)
> This means that any transaction timeout that occurs will leave the application server in a permanently broken state and require a server restart. Hence 4.2.0.GA is currently unusable in production!
> This needs to be fixed in an immediate patch release.

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