Clair Postgres database storage space issue

Description of Problem / Feature Request

Postgres Storage :1800 GiB Clair Postgres database storage space gets full in 1 week span and then suddenly storage space is freed around 1TB. This happens every week storage gets full and suddenly freed up at once.

Garbage collection is running daily.

Need to understand why storage space is getting full and GC is not able to clean up the space.

Environment: clair:4.7.2 Combo Mode

config.yaml introspection_addr: :8089 http_listen_addr: :8080 log_level: debug indexer: connstring: XXX scanlock_retry: 10 layer_scan_concurrency: 5 migrations: true matcher: connstring: XXX migrations: true update_retention: 2 period: matchers: names:

• alpine
• aws
• debian
• oracle
• photon
• python
• rhel
• suse
• ubuntu updaters: sets:
• alpine
• aws
• debian
• oracle
• photon
• pyupio
• rhel
• suse
• ubuntu notifier: connstring: XXX delivery_interval: 1m poll_interval: 5m migrations: true auth: psk: key: XXX iss: ["quay"]

tracing and metrics

trace: name: "jaeger" probability: 1 jaeger: agent: endpoint: "localhost:6831" service_name: "clair" metrics: name: "prometheus"