[KUDU-3561] Too Many Warning Log: "Entity is not relevant to Prometheus"

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.17.0
• Fix Version/s: 1.18.0, 1.17.1
• Component/s: metrics
• Code Review: https://gerrit.cloudera.org/#/c/21226/
• Assignee: Alexey Serbin
• Reporter: Liu Lin
• Created: 30/Mar/24 14:56
• Updated: 08/Apr/24 16:27
• Resolved: 05/Apr/24 23:25

Description

I encountered the same issue as KUDU-3549, so I recompiled Kudu using the master branch.

Now Prometheus is able to collect metrics from Kudu correctly through the /metrics_prometheus endpoint.

However, I noticed a large number of "Failed to write entity [xxx] as Prometheus: Not found: Entity is not relevant to Prometheus" warning logs in the Tserver's logs.

Could you please confirm if this is a code issue? If not, how can I reduce these logs?