nova/releasenotes/notes/delete-TypeAffinityFilter-6...

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---
upgrade:
- |
The ``TypeAffinityFilter``, which was deprecated in the 16.0.0 Pike
release, has been removed. The filter was flawed in that it relied on the
flavor ``id`` primary key which cannot be relied upon since you cannot
"edit" a flavor to change its disk, vcpu, etc values. Therefore to change
a given flavor, it must be deleted and re-created, which means a new ``id``
value, thus potentially breaking the usefulness of the filter. Also, the
flavor migration from the ``nova`` database to the ``nova_api`` database
would also have resulted in different ``id`` values.