[hibernate-dev] Exceptions thrown in a tx synchronization are eaten

[Adam Warski]

Hello,

if a transaction synchronization throws an exception, is it only logged, and not thrown further (see org.hibernate.transaction.JDBCTransaction, line 273). Is there some reason for this?

As Envers uses tx synchronizations quite extensively, when an exception is thrown in the synchronization, I roll back the transaction manually. So, no data is persisted (which is the desired behavior), but the client isn't notified in any way that something went wrong; for the client, the operation behaves as if the tx commited successfully.

I suspect that maybe some applications rely on the fact that the exception is eaten and not re-thrown. If there are no contra-arguments to throw the exceptions, maybe a good solution would be to re-throw the exception is the transaction is already marked for rollback? Or if it was marked for rollback in the synchronization?

The related JIRA issues are:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-3543
http://opensource.atlassian.com/projects/hibernate/browse/HHH-4721

By the way, how does Hibernate Search deal with such situations? I looked at PostTransactionWorkQueueSynchronization, and it seems that it's possible that the transaction commits, but the data isn't indexed properly, if the queueingProcessor.performWorks throws an exception?

-- 
Adam Warski
http://www.warski.org
http://www.softwaremill.eu