Public bug reported:
The duplicate mac detection logic is based on catching DBDuplicate
exceptions at a very specific time. This results in incorrect
classification if other things are waiting to be flushed which results
in weird workarounds like
(https://review.openstack.org/#/c/292207/23/neutron/db/db_base_plugin_common.py).
It also creates different behavior if the duplicate isn't realized until
certification at COMMIT, at which point the retry decorator will restart
the operation.
** Affects: neutron
Importance: Undecided
Assignee: Kevin Benton (kevinbenton)
Status: In Progress
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https://bugs.launchpad.net/bugs/1590602
Title:
duplicate mac detection is brittle
Status in neutron:
In Progress
Bug description:
The duplicate mac detection logic is based on catching DBDuplicate
exceptions at a very specific time. This results in incorrect
classification if other things are waiting to be flushed which results
in weird workarounds like
(https://review.openstack.org/#/c/292207/23/neutron/db/db_base_plugin_common.py).
It also creates different behavior if the duplicate isn't realized
until certification at COMMIT, at which point the retry decorator will
restart the operation.
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https://bugs.launchpad.net/neutron/+bug/1590602/+subscriptions
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