Sameer Devgan created FLINK-39425:
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Summary: [flink-metrics-otel] OpenTelemetryEventReporter ignores
service.name and service.version config
Key: FLINK-39425
URL: https://issues.apache.org/jira/browse/FLINK-39425
Project: Flink
Issue Type: Bug
Components: Runtime / Metrics
Affects Versions: 2.1.1, 2.1.0, 2.1.2
Reporter: Sameer Devgan
{{OpenTelemetryEventReporter logger has a missing init this }} means the
{{service.name}} and {{service.version}} config options, defined in
{{{}OpenTelemetryReporterOptions{}}}, are silently ignored for the event
reporter. The {{resource}} field in {{OpenTelemetryReporterBase}} remains as
{{Resource.getDefault()}} (which sets {{{}service.name =
unknown_service:java{}}}), and that default is then baked into the
{{SdkLoggerProvider}} at construction time.
Impact
When all three reporters are configured with the same {{{}service.name{}}}:
1)Metrics and traces are exported with {{service.name = <configured value>}}
{{{}2){}}}Events (log records) are exported with {{service.name =
unknown_service:java}}
{{This breaks service-name-based correlation in any OTel-compatible backend
(Grafana, Datadog, etc.) — queries filtering on }}{{service.name}}{{ return
metrics and traces but zero events, making it appear events were never emitted}}
{{}}
Reproduction
{{}}
Configure the event reporter with a {{{}service.name{}}}:
{{}}
metrics.reporter.otel.class:
org.apache.flink.events.otel.OpenTelemetryEventReporterFactory
metrics.reporter.otel.exporter.endpoint: http://localhost:4317
metrics.reporter.otel.service.name: my-flink-cluster
{{}}
Inspect the OTLP payload received by the collector. The
{{resourceLogs[].resource.attributes}} will contain {{service.name =
unknown_service:java}} instead of {{{}my-flink-cluster{}}}.
{{}}
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