Github user jburwell commented on the issue:
https://github.com/apache/cloudstack/pull/1762
@serg38 there remains a risk when those methods are executed in the context
of an open transaction where DMLs have already been executed and subsequent
DMLs will be executed. In this scenario, the first set of the changes would be
lost due to the rollback triggered by the query deadlock with the second set
proceeding successfully.
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