Github user jburwell commented on the issue:
https://github.com/apache/cloudstack/pull/1762
@serg38 my reading of the code is that only the most recently attempted DML
will be re-executed. Furthermore, retrying without refreshing the base data
can also lead to data corruption. The best thing to do in a case of a dead
lock is to fail and rollback due to the risk of data corruption.
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