Jan Høydahl created SOLR-18638:
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Summary: cross-dc-manager pushes OTLP metrics as
unknown_service:java
Key: SOLR-18638
URL: https://issues.apache.org/jira/browse/SOLR-18638
Project: Solr
Issue Type: Bug
Components: module - crossDC, metrics
Reporter: Jan Høydahl
{{OtelMetrics.register()}} builds {{new SolrMetricManager(new
OtlpExporterFactory().getExporter())}} without calling
{{OpenTelemetryConfigurator.initializeOpenTelemetrySdk}}, so its meter
providers fall back to {{Resource.getDefault()}}.
Pushed metrics therefore carry {{service.name="unknown_service:java"}} and no
{{service.instance.id}}, so a collector cannot tell one cross-DC manager from
another. This is the same defect SOLR-18594 fixed for Solr nodes.
It is not a Solr node, so the {{host:port}} node defaults do not apply. It
wants its own resource, for example {{service.name=solr\-crossdc}} plus
{{host.name}}, honouring {{OTEL_SERVICE_NAME}} and {{OTEL_RESOURCE_ATTRIBUTES}}
like everything else.
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