Gnocchi fails to receive metrics after loading gnocchi:// publisher fails

The archive policy used in the configuration is `ceilometer-high`
~~~
# cat pipeline.yaml
---
sources:
    - name: meter_source
      meters:
          - "*"
      sinks:
          - meter_sink
sinks:
    - name: meter_sink
      publishers:
          - gnocchi://?filter_project=service&archive_policy=ceilometer-high
          - notifier://172.17.1.73:5666/?driver=amqp&topic=osp17-metering

# cat event_pipeline.yaml
---
sources:
    - name: event_source
      events:
          - "*"
      sinks:
          - event_sink
sinks:
    - name: event_sink
      transformers:
      triggers:
      publishers:
          - gnocchi://?filter_project=service&archive_policy=ceilometer-high
          - notifier://172.17.1.73:5666/?driver=amqp&topic=osp17-event
~~~

No such archive policy exists in gnocchi which should've been generated during "ceilometer-upgrade".
However, it doesn't complain/log anything about the incoming metrics having an undefined archive policy.
~~~
$ openstack metric archive-policy list
+--------+-------------+-----------------------------------------------------------------------+---------------------------------+
| name | back_window | definition | aggregation_methods |
+--------+-------------+-----------------------------------------------------------------------+---------------------------------+
| bool | 3600 | - timespan: 365 days, 0:00:00, granularity: 0:00:01, points: 31536000 | last |
| high | 0 | - timespan: 1:00:00, granularity: 0:00:01, points: 3600 | min, mean, count, max, sum, std |
| | | - timespan: 7 days, 0:00:00, granularity: 0:01:00, points: 10080 | |
| | | - timespan: 365 days, 0:00:00, granularity: 1:00:00, points: 8760 | |
| low | 0 | - timespan: 30 days, 0:00:00, granularity: 0:05:00, points: 8640 | min, mean, count, max, sum, std |
| medium | 0 | - timespan: 7 days, 0:00:00, granularity: 0:01:00, points: 10080 | min, mean, count, max, sum, std |
| | | - timespan: 365 days, 0:00:00, granularity: 1:00:00, points: 8760 | |
+--------+-------------+-----------------------------------------------------------------------+---------------------------------+
~~~

Upon restarting notification agent on one of the ctrl nodes, the missing policies were created after which Gnocchi starts processing metrics
~~~
$ openstack metric archive-policy list
+----------------------+-------------+-----------------------------------------------------------------------+---------------------------------+
| name | back_window | definition | aggregation_methods |
+----------------------+-------------+-----------------------------------------------------------------------+---------------------------------+
| bool | 3600 | - timespan: 365 days, 0:00:00, granularity: 0:00:01, points: 31536000 | last |
| ceilometer-high | 0 | - timespan: 1:00:00, granularity: 0:00:01, points: 3600 | mean |
| | | - timespan: 1 day, 0:00:00, granularity: 0:01:00, points: 1440 | |
| | | - timespan: 365 days, 0:00:00, granularity: 1:00:00, points: 8760 | |
| ceilometer-high-rate | 0 | - timespan: 1:00:00, granularity: 0:00:01, points: 3600 | mean, rate:mean |
| | | - timespan: 1 day, 0:00:00, granularity: 0:01:00, points: 1440 | |
| | | - timespan: 365 days, 0:00:00, granularity: 1:00:00, points: 8760 | |
| ceilometer-low | 0 | - timespan: 30 days, 0:00:00, granularity: 0:05:00, points: 8640 | mean |
| ceilometer-low-rate | 0 | - timespan: 30 days, 0:00:00, granularity: 0:05:00, points: 8640 | mean, rate:mean |
| high | 0 | - timespan: 1:00:00, granularity: 0:00:01, points: 3600 | mean, count, max, min, sum, std |
| | | - timespan: 7 days, 0:00:00, granularity: 0:01:00, points: 10080 | |
| | | - timespan: 365 days, 0:00:00, granularity: 1:00:00, points: 8760 | |
| low | 0 | - timespan: 30 days, 0:00:00, granularity: 0:05:00, points: 8640 | mean, count, max, min, sum, std |
| medium | 0 | - timespan: 7 days, 0:00:00, granularity: 0:01:00, points: 10080 | mean, count, max, min, sum, std |
| | | - timespan: 365 days, 0:00:00, granularity: 1:00:00, points: 8760 | |
+----------------------+-------------+-----------------------------------------------------------------------+---------------------------------+
~~~