The GitHub Actions job "Check newsfragment PR number" on 
airflow.git/feat/dagbag-cache-metric-namespace has failed.
Run started by GitHub user jason810496 (triggered by jason810496).

Head commit for run:
19d7b1d000e700a89e5d3bc8be831bf67c94a678 / LIU ZHE YOU <[email protected]>
Report Dag cache metrics under each component's own namespace

Every DBDagBag emitted its cache counters under api_server.dag_bag.*, so once 
the
scheduler gained a cache its traffic was silently counted against the API
server's series. An operator reading cache_hit or cache_size could not tell the
two components apart, and the API server's numbers became wrong rather than
merely incomplete.

Each caller now supplies the namespace it reports under, and a cache built
without one fails at construction instead of emitting a partially-formed metric
name mid-request.

The registry check matched dynamic metric names only by the static prefix ahead
of their first variable, which cannot express a name assembled from a caller
supplied prefix. It now matches on all static parts wherever the variable sits.

Report URL: https://github.com/apache/airflow/actions/runs/32221233661

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