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Update Telemetry (OpenTelemetry & Prometheus) - #4594

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janhoy merged 8 commits into
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solrbot:renovate/telemetry-(opentelemetry-and-prometheus)
Aug 4, 2026
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Update Telemetry (OpenTelemetry & Prometheus)#4594
janhoy merged 8 commits into
apache:mainfrom
solrbot:renovate/telemetry-(opentelemetry-and-prometheus)

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This PR body was truncated due to platform limits.

This PR contains the following updates:

Package Type Update Change
io.prometheus:prometheus-metrics-model dependencies minor 1.1.0 → 1.8.0
io.prometheus:prometheus-metrics-exposition-formats dependencies minor 1.1.0 → 1.8.0
io.opentelemetry:opentelemetry-sdk-trace dependencies minor 1.56.0 → 1.63.0
io.opentelemetry:opentelemetry-sdk-testing dependencies minor 1.56.0 → 1.63.0
io.opentelemetry:opentelemetry-sdk-metrics dependencies minor 1.56.0 → 1.63.0
io.opentelemetry:opentelemetry-sdk-extension-autoconfigure dependencies minor 1.56.0 → 1.63.0
io.opentelemetry:opentelemetry-sdk dependencies minor 1.56.0 → 1.63.0
io.opentelemetry:opentelemetry-exporter-otlp dependencies minor 1.56.0 → 1.63.0
io.opentelemetry:opentelemetry-context dependencies minor 1.56.0 → 1.63.0
io.opentelemetry:opentelemetry-bom dependencies minor 1.56.0 → 1.63.0
io.opentelemetry:opentelemetry-api dependencies minor 1.56.0 → 1.63.0

Release Notes

prometheus/client_java (io.prometheus:prometheus-metrics-model)

v1.8.0

Features
Bug Fixes
Documentation

v1.7.0

Features
Bug Fixes
  • deps: update dependency com.github.ben-manes.caffeine:caffeine to v3.2.4 (#​2088) (144eb61)
  • deps: update dependency io.dropwizard.metrics:metrics-core to v4.2.39 (#​2139) (5817d13)
  • deps: update dependency io.dropwizard.metrics5:metrics-core to v5.0.7 (#​2140) (261c451)
  • deps: update dependency io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha to v2.28.0-alpha (#​2126) (b62b5d0)
  • deps: update dependency io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha to v2.28.0-alpha (#​2127) (e11ce3d)
  • deps: update dependency io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha to v2.28.1-alpha (#​2132) (b09be38)
  • deps: update dependency io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha to v2.28.1-alpha (#​2133) (a241c16)
  • deps: update dependency org.apache.tomcat.embed:tomcat-embed-core to v11.0.22 (#​2099) (22125c5)
  • deps: update jetty monorepo to v12.1.10 (#​2169) (ddd3991)
  • deps: update jetty monorepo to v12.1.9 (#​2102) (04bee70)
  • deps: update protobuf (#​2129) (320538a)
  • Reduce allocations for classic histogram buckets (#​2081) (edd160a)
  • restore legacy suffix compatibility (#​2100) (b2ae70f)
  • restore reserved suffix stripping in PrometheusNaming.sanitizeMetricName() (#​2124) (2d0f508)
Performance Improvements
Documentation

v1.6.1

Note: With the OM2 metric-name preservation fix in this release, OpenMetrics 2.0 can now be
tested. It is still in progress and not ready for general use yet.

Bug Fixes
Documentation

v1.6.0

Note: OpenMetrics 2.0 support is still in progress and not ready for general use yet.

As part of the OM2 work, metric-name suffix handling moved from metric creation time to scrape
time. A positive side effect is that metric names are now more flexible across the board, for
example names ending in suffixes like _total are accepted where they were previously rejected.
To keep the Prometheus and OM1 output unambiguous, the registry tracks claimed exposition names
and still rejects registrations that would collide at scrape time.

Downstream adapter libraries that implement MultiCollector need their registration-time
metadata to match the metric families they emit at scrape time. When upgrading to 1.6.0+, adapter
registration metadata needs to stay aligned with emitted names, types, label names, and suffix
behavior under the new collision model.
See also: Validation at registration only

Example Before 1.6.0 Since 1.6.0 Reason
Gauge("foo_total") Rejected Allowed Not breaking because this previously failed at registration, so no working setup changes behavior, and safe because _total suffix expansion applies to counters, not gauges.
Counter("events_total") Rejected Allowed Not breaking because the OM1 output is still events_total; only the builder now accepts the name.
Gauge("foo_total") + Histogram("foo") Rejected Allowed Not breaking because this combination used to be blocked even though the exposed names do not overlap.
Gauge("events_total") + Counter("events") Rejected Rejected Not breaking because the ambiguous OM1 output would still expose two events_total series.
Gauge("foo_count") + Histogram("foo") Allowed Rejected Intentionally breaking because the old behavior could expose a conflicting foo_count name at scrape time.
Features
Bug Fixes
  • deps: update dependency com.google.guava:guava to v33.6.0-jre (#​2021) (1382693)
  • deps: update dependency commons-io:commons-io to v2.22.0 (#​2044) (9e05c1d)
  • deps: update dependency io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha to v2.27.0-alpha (#​2022) (30ac534)
  • deps: update dependency io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha to v2.27.0-alpha (#​2023) (2d51a32)
  • deps: update dependency io.prometheus:prometheus-metrics-bom to v1.5.1 (#​2004) (650ce4b)
  • deps: update dependency org.apache.tomcat.embed:tomcat-embed-core to v11.0.21 (#​2005) (7a36df7)
  • deps: update dependency org.springframework.boot:spring-boot-starter-parent to v4.0.5 (#​2006) (0106c18)
  • deps: update dependency org.springframework.boot:spring-boot-starter-parent to v4.0.6 (#​2046) (40a9db8)
  • deps: update jetty monorepo to v12.1.8 (#​2007) (acab5b2)
  • deps: update protobuf (#​2024) (8e2214e)
  • pass release tag as input to deploy workflow (#​1982) (165c921)
  • pin grafana/otel-lgtm to 0.7.2 in OATs acceptance test (#​1992) (f17ad9a)
  • stabilize flaky timer and thread count tests (#​1973) (ce5867b)
  • trigger Maven deploy from release-please via workflow_dispatch (#​1981) (698f956)

v1.5.1

Bug Fixes
Documentation

v1.5.0

Highlights
Performance
  • Improve histogram/summary performance under contention (#​1794) by @​jack-berg — Significant throughput improvements for high-contention scenarios by striping observationCount across multiple instances. Benchmarks show prometheusClassic improving from ~5,126 ops/s to ~14,624 ops/s (~185% improvement) and prometheusNative from ~3,854 ops/s to ~7,406 ops/s (~92% improvement).
Configuration
  • Support environment variables in properties (#​1828) by @​zeitlinger — Adds environment variable support for configuration (e.g., IO_PROMETHEUS_EXPORTER_HTTP_SERVER_PORT) while maintaining full backward compatibility. Also introduces snake_case property naming (recommended) while keeping camelCase working.
API
  • Allow metrics with the same name but different labels (#​1800) by @​jaydeluca — Enables registration of metrics with the same name, with validation at both registration and scrape time.
  • Add stable Metrics class to decouple consumers from protobuf version (#​1873) by @​zeitlinger — Introduces a stable Metrics class so consumer code no longer needs import updates on protobuf upgrades.
OpenTelemetry
  • Add OTel support module and make examples standalone (#​1868) by @​zeitlinger — New prometheus-metrics-otel-support module that bundles the OTel SDK and Prometheus exporter as a single dependency. Examples are now standalone and can be copy-pasted directly.
  • Add docs and example for OTel JVM runtime metrics (#​1861) by @​zeitlinger
Exporters
  • Add metricsHandlerPath and registerHealthHandler configuration options to HTTPServer (#​1735) by @​Donnerbart
  • Disable compression in PrometheusScrapeHandler (#​1691) by @​Myllyenko — Adds ability to disable compression in PrometheusScrapeHandler.
  • Prevent exception in HttpServer exporter when using custom root metrics path (#​1772) by @​Donnerbart
Instrumentation
What's Changed
🏕 Features
🔧 Maintenance
🧹 Chore
👒 Dependencies

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This PR has been generated by Renovate Bot

@solrbot solrbot added the exempt-stale Prevent a PR from going stale label Jul 2, 2026
solrbot and others added 3 commits July 2, 2026 15:35
@solrbot
Add changelog entry for PR#4594
4082ef5
@janhoy
Fix CI: align OTel alpha artifacts with 1.63.0 core and add missing p…
8da55e2 
…rometheus license files

- Bump opentelemetry-exporter-prometheus 1.56.0-alpha -> 1.63.0-alpha to match
  the 1.63.0 SDK (fixes NoClassDefFoundError io/opentelemetry/sdk/internal/ThrottlingLogger
  and Otel2PrometheusConverter init failures in SolrJ tests).
- Bump opentelemetry-runtime-telemetry 2.22.0-alpha -> 2.27.0-alpha (latest) so its
  transitive opentelemetry-api-incubator provides DeclarativeConfigProperties.get(String)
  required by SDK 1.63.0 autoconfigure (fixes NoSuchMethodError in opentelemetry module tests).
- Add LICENSE-ASL/NOTICE files for new prometheus transitive deps
  prometheus-metrics-config and prometheus-metrics-exposition-textformats.
- Regenerate lockfiles and license checksums (semconv 1.37.0 -> 1.40.0 transitively).
@janhoy
Simplify prom NOTICE/LICENSE files
126b5f9
@jaykay12 jaykay12 mentioned this pull request Jul 5, 2026
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solrbot commented Aug 4, 2026

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Edited/Blocked Notification

Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

You can manually request rebase by checking the rebase/retry box above.

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janhoy added 2 commits August 4, 2026 13:19
@janhoy
Merge remote-tracking branch 'upstream/main' into renovate-telemetry
2dea967 
# Conflicts:
#	solr/cross-dc-manager/gradle.lockfile
#	solr/modules/opentelemetry/gradle.lockfile
@janhoy
Regenerate lockfiles and license checksums after merging main
bd108c0
@janhoy
Bump OpenTelemetry to 1.64.0; PrometheusMetricReader is now builder-o…
f0be937 
…nly, so FilterablePrometheusMetricReader delegates instead of subclassing
@janhoy
Revert "Bump OpenTelemetry to 1.64.0; PrometheusMetricReader is now b…
47c7397 
…uilder-only, so FilterablePrometheusMetricReader delegates instead of subclassing"

This reverts commit f0be937.
@janhoy
janhoy merged commit 3676963 into apache:main Aug 4, 2026
6 of 7 checks passed
@janhoy janhoy added this to the 10.x milestone Aug 4, 2026
@janhoy janhoy mentioned this pull request Aug 5, 2026
Merged
@janhoy

janhoy commented Aug 5, 2026

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Heads up - This dependency upgrade changed a prometheus metric name and now causes reproducible test failure for org.apache.solr.cluster.placement.impl.PlacementPluginIntegrationTest.testAttributeFetcherImpl. A proposed fix is in #4711

ppkarwasz added a commit to vex-generation-toolset/solr that referenced this pull request Aug 5, 2026
@ppkarwasz
SOLR-17328: Update the packaging lock state after merging main
49143e6 
The bomFull and bomSlim configurations exist only on this branch, so
changes on main that alter what :solr:packaging resolves do not update
their entries in solr/packaging/gradle.lockfile. Two such changes had
accumulated and broke the build:

* SOLR-18187 (apache#4259) added the anthropic, google-ai-gemini and ollama
  langchain4j providers to :solr:modules:language-models, which bomFull
  pulls in transitively.
* apache#4594 bumped the OpenTelemetry and Prometheus stacks.

Regenerated with "gradlew resolveAndLockAll collectJarInfos
--write-locks"; only the packaging lockfile changed.

Assisted-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
dsmiley pushed a commit that referenced this pull request Aug 8, 2026
@solrbot @janhoy @dsmiley
Update Telemetry (OpenTelemetry & Prometheus) (#4594)
b1dc8e9 
Co-authored-by: Jan Høydahl <janhoy@apache.org>
(cherry picked from commit 3676963)
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