nova/releasenotes/notes/scheduler-deprecation-20d035193c7392e4.yaml

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---
deprecations:
- |
The CachingScheduler and ChanceScheduler drivers are deprecated in Pike.
These are not integrated with the placement service, and their primary
purpose (speed over correctness) should be addressed by the default
FilterScheduler going forward. If ChanceScheduler behavior is desired
(i.e. speed trumps correctness) then configuring the FilterScheduler with
no enabled filters should approximate that behavior.