[#8909] feat(lance): Add metric systems to lance server#8904
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jerryshao merged 9 commits intoapache:branch-lance-namepspace-devfrom Oct 24, 2025
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we should also add the metric annotation to the rest method
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…#8904) ### What changes were proposed in this pull request? 1. Added Lance REST server metrics constant (MetricsSource.java) 2. Added MapperConfig rule to transform Dropwizard metrics to Prometheus format 3. Integrated metrics collection in Lance REST service (LanceRESTService.java) 4. Enables automatic exposure of metrics at /metrics and /prometheus/metrics endpoints ### Why are the changes needed? Observability is needed for the new lance rest service. Fix: apache#8909 ### Does this PR introduce _any_ user-facing change? Yes - New metrics endpoints Standalone mode: - http://localhost:9101/metrics (Dropwizard JSON format) - http://localhost:9101/prometheus/metrics (Prometheus text format) Auxiliary mode: - Metrics exposed on all service ports (8090, 9001, 9101) showing unified metrics from all services ### How was this patch tested? Unit tests --------- Co-authored-by: Jerry Shao <jerryshao@datastrato.com>
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…#8904) ### What changes were proposed in this pull request? 1. Added Lance REST server metrics constant (MetricsSource.java) 2. Added MapperConfig rule to transform Dropwizard metrics to Prometheus format 3. Integrated metrics collection in Lance REST service (LanceRESTService.java) 4. Enables automatic exposure of metrics at /metrics and /prometheus/metrics endpoints ### Why are the changes needed? Observability is needed for the new lance rest service. Fix: apache#8909 ### Does this PR introduce _any_ user-facing change? Yes - New metrics endpoints Standalone mode: - http://localhost:9101/metrics (Dropwizard JSON format) - http://localhost:9101/prometheus/metrics (Prometheus text format) Auxiliary mode: - Metrics exposed on all service ports (8090, 9001, 9101) showing unified metrics from all services ### How was this patch tested? Unit tests --------- Co-authored-by: Jerry Shao <jerryshao@datastrato.com>
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…#8904) ### What changes were proposed in this pull request? 1. Added Lance REST server metrics constant (MetricsSource.java) 2. Added MapperConfig rule to transform Dropwizard metrics to Prometheus format 3. Integrated metrics collection in Lance REST service (LanceRESTService.java) 4. Enables automatic exposure of metrics at /metrics and /prometheus/metrics endpoints ### Why are the changes needed? Observability is needed for the new lance rest service. Fix: apache#8909 ### Does this PR introduce _any_ user-facing change? Yes - New metrics endpoints Standalone mode: - http://localhost:9101/metrics (Dropwizard JSON format) - http://localhost:9101/prometheus/metrics (Prometheus text format) Auxiliary mode: - Metrics exposed on all service ports (8090, 9001, 9101) showing unified metrics from all services ### How was this patch tested? Unit tests --------- Co-authored-by: Jerry Shao <jerryshao@datastrato.com>
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What changes were proposed in this pull request?
Why are the changes needed?
Observability is needed for the new lance rest service.
Fix: #8909
Does this PR introduce any user-facing change?
Yes - New metrics endpoints
Standalone mode:
Auxiliary mode:
How was this patch tested?
Unit tests