nova/releasenotes/notes/drop-oslo_db-use_tpool-48542a28d10e1bae.yaml
Stephen Finucane 9799468d6f db: Drop support for experimental concurrency
The 'oslo_db.concurrency.TpoolDbapiWrapper' wrapper provides a way to
enable the experimental use of thread pooling for all DB API calls. This
has been part of 'oslo.db' since that project was first split out on
nova back in change I0649539e071b2318ec85ed5d70259c949408e64b and has
been part of nova for even longer, having been first introduced in
change Id7de85dce11f5ea61dfccddf80de7800a2bc4e37. However, this has not
graduated to non-experimental status in the 7 years since and is
unlikely to so now. It also isn't used for any of the API DB calls.
Hasta la vista, 'TpoolDbapiWrapper'. You've had a good ride.

Change-Id: I1ce8f180d6bef465f9faa0a10c837841ed7ab528
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
2021-07-05 11:10:10 +01:00

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YAML

---
upgrade:
- |
Experimental support for thread pooling of DB API calls has been removed.
This feature was first introduced in the 2014.2 (Juno) release but has not
graduated to fully-supported status since nor was it being used for any
API DB calls. The ``[oslo_db] use_tpool`` config option used to enable
this feature will now be ignored by nova.