GCP 2.25.1 - High no. of error messages in Elastic Agent Logs

[ar3diu]

Elastic Agent & Stack: 8.9.0
Google Cloud Platform Integration: 2.25.1

Configuration: Elastic-Agent using the GCP integration to collect audit logs from a Pub/Sub.
Issue: The audit logs actually do arrive in Elasticsearch, but there is a high no. of error messages in Elastic Agent logs, like for every audit log that's ingested. The message doesn't suggest as this would actually be about an error and I'm thinking that it could be a software bug that logs this message under a wrong log level.

{
    "log.level": "error",
    "@timestamp": "2023-08-10T12:16:48.214Z",
    "message": "ACKing pub/sub event",
    "component": {
        "binary": "filebeat",
        "dataset": "elastic_agent.filebeat",
        "id": "gcp-pubsub-default",
        "type": "gcp-pubsub"
    },
    "log": {
        "source": "gcp-pubsub-default"
    },
    "log.logger": "gcp.pubsub",
    "log.origin": {
        "file.line": 150,
        "file.name": "gcppubsub/input.go"
    },
    "service.name": "filebeat",
    "pubsub_project": "<redacted>",
    "pubsub_topic": "<redacted>",
    "pubsub_subscription": {
        "Create": false,
        "MaxOutstandingMessages": 1000,
        "Name": "<redacted>",
        "NumGoroutines": 1
    },
    "ecs.version": "1.6.0",
    "ecs.version": "1.6.0"
}

[galdor]

I'm seeing the same behaviour with Filebeat 0.8.9. Does anyone know what it means and how to make it stop?

[elasticmachine]

Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

[andrewkroh]

I think this relates to elastic/beats#36296 which was fixed and backported into the 8.9 branch so that it can be released when v8.9.2 comes out.

[ebeahan]

Fixed in #7349.