---
features:
  - |
    Because of deprecating the collector, the default publishers in
    pipeline.yaml and event_pipeline.yaml are now changed using database
    instead of notifier.
deprecations:
  - |
    Collector is no longer supported in this release. The collector
    introduces lags in pushing data to backend. To optimize the
    architecture, Ceilometer push data through dispatchers using
    publishers in notification agent directly.