Description of problem:

Atomicity of messages sent under XA is lost when qpidd is killed and started again. A message that is read under an XA transaction is redelivered on reconnect.


Version-Release number of selected component (if applicable):

qpid-jca-0.18-8.el6.noarch
qpid-jca-xarecovery-0.18-8.el6.noarch


How reproducible:
100 %


Steps to Reproduce:
1. send a number of messages to a queue in one xa transaction
2. read messages from queue with MDB one by one using xa , store messages to a DB
3. kill qpidd and start qpidd
4. read the rest of messages with MDB, storing them to the DB
5. check the number of messages in the DB

Actual results:

In the DB, there is a large number of duplicate messages found (1 to 25 % of the original number)


Expected results:

In the DB, only messages that were found in the queue should be found, with no duplicates.

Additional info:

Additionally, the test was run without the database (to avoid possible DB malfunctioning). Instead an auxiliary queue was used to store read messages. The result is exactly the same.