It is possible for the CommitMarkableResource recovery manager to attempt to activate an AtomicAction while it is being committed which can cause filenotfoundstacktrace and NullPointerException ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Key: JBTM-2159 URL: https://issues.jboss.org/browse/JBTM-2159 Project: JBoss Transaction Manager Issue Type: Enhancement Security Level: Public(Everyone can see) Components: Recovery Reporter: Tom Jenkinson Assignee: Tom Jenkinson Basically: 1. App thread creates AA 2. AA UID is seen in phase1 recovery thread 3. App thread commits AA 4. App thread deletes AA UID 5. Recovery thread tries to activate AA with UID to recover it but it gets exceptions as shown here: https://bugzilla.redhat.com/show_bug.cgi?id=1089251