• This change would not impact the existing deployment and its feature for our official release users.
• Warning If there are custom query plugins for our Elasticsearch indices, this change could break them as sort queries and aggregation queries which used the unexpected fields are being blocked.

OAP Server

• Skip processing OTLP metrics data points with flag FLAG_NO_RECORDED_VALUE, which causes exceptional result.
• Add self observability metrics for GraphQL query, graphql_query_latency.
• Reduce the count of process index and adding time range when query process index.
• Bump up Apache commons-io to 2.17.0.
• Polish eBPF so11y metrics and add error count for query metrics.
• Support query endpoint list with duration parameter(optional).
• Change the endpoint_traffic to updatable for the additional column last_ping.
• Add Component ID(5023) for the GoZero framework.
• Support Kong monitoring.
• Support adding additional attr[0-5] for service/endpoint level metrics.
• Support async-profiler feature for performance analysis.
• Add metrics value owner for metrics topN query result.
• Add naming control for EndpointDependencyBuilder.
• The index type BanyanDB.IndexRule.IndexType#TREE is removed. All indices are using IndexType#INVERTED now.
• Add max query size settings to BanyanDB.
• Fix "BanyanDBTraceQueryDAO.queryBasicTraces" doesn't support querying by "trace_id".
• Polish mesh data dispatcher: don't generate Instance/Endpoint metrics if they are empty.
• Adapt the new metadata standardization in Istio 1.24.
• Bump up netty to 4.1.115, grpc to 1.68.1, boringssl to 2.0.69.
• BanyanDB: Support update the Group settings when OAP starting.
• BanyanDB: Introduce index mode and refactor banyandb group settings.
• BanyanDB: Introduce the new Progressive TTL feature.
• BanyanDB: Support update the Schema when OAP starting.
• BanyanDB: Speed up OAP booting while initializing BanyanDB.
• BanyanDB: Support @EnableSort on the column to enable sorting for IndexRule and set the default to false.
• Support Get Effective TTL Configurations API.
• Fix ServerStatusService.statusWatchers concurrent modification.
• Add protection for dynamic config change propagate chain.
• Add Ruby component IDs(HttpClient=2, Redis=7, Memcached=20, Elasticsearch=47, Ruby=12000, Sinatra=12001).
• Add component ID(160) for Caffeine.
• Alarm: Support store and query the metrics snapshot when the alarm is triggered.
• Alarm: Remove unused Alarm Trend query.
• Fix missing remote endpoint IP address in span query of zipkin query module.
• Fix hierarchy-definition.yml config file packaged into start.jar wrongly.
• Add bydb.dependencies.properties config file to define server dependency versions.
• Fix AvgHistogramPercentileFunction doesn't have proper field definition for ranks.
• BanyanDB: Support the new Property data module.
• MQE: Support top_n_of function for merging multiple metrics topn query.
• Support labelAvg function in the OAL engine.
• Added maxLabelCount parameter in the labelCount function of OAL to limit the number of labels can be counted.
• Adapt the new Browser API(/browser/perfData/webVitals, /browser/perfData/webInteractions, /browser/perfData/resources) protocol.
• Add Circuit Breaking mechanism.
• BanyanDB: Add support for compatibility checks based on the BanyanDB server's API version.
• MQE: Support &&(and), ||(or) bool operators.
• OAP self observability: Add JVM heap and direct memory used metrics.
• OAP self observability: Add watermark circuit break/recover metrics.
• AI Pipeline: Support query baseline metrics names and predict metrics value.
• Add Get Node List in the Cluster API.
• Add type descriptor when converting Envoy logs to JSON for persistence, to avoid conversion error.
• Bseline: Support query baseline with MQE and use in the Alarm Rule.
• Bump up netty to 4.11.118 to fix CVE-2025-24970.
• Add Get Alarm Runtime Status API.
• Add lock when query the Alarm metrics window values.
• Add a fail-safe mechanism to prevent traffic metrics inconsistent between in-memory and database server.
• Add more clear logs when oap-cluster-internal data(metrics/traffic) format is inconsistent.
• Optimize metrics cache loading when trace latency greater than cache timeout.
• Allow calling lang.groovy.GString in DSL.
• BanyanDB: fix alarm query result without sort.
• Add a component ID for Virtual thread executor.
• Add more model installation log info for OAP storage initialization.
• BanyanDB: Separate the storage configuration to an independent file: bydb.yaml.
• Bump Armeria to 1.32.0 and some transitive dependencies.
• Skip persisting metrics/record data that have been expired.
• Fix the issue of missing Last Ping data.
• Add HTTP headers configuration for the alarm webhook.
• Bump up BanyanDB java client to 0.8.0.

UI

• Add support for case-insensitive search in the dashboard list.
• Add content decorations to Table and Card widgets.
• Support the endpoint list widget query with duration parameter.
• Support ranges for Value Mappings.
• Add service global topN widget on General-Root, Mesh-Root, K8S-Root dashboard.
• Fix initialization dashboards.
• Update the Kubernetes metrics for reduce multiple metrics calculate in MQE.
• Support view data value related dashboards in TopList widgets.
• Add endpoint global topN widget on General-Root, Mesh-Root.
• Implement owner option for TopList widgets in related trace options.
• Hide entrances to unrelated dashboards in topn list.
• Split topology metric query to avoid exceeding the maximum query complexity.
• Fix view metrics related trace and metrics query.
• Add support collapse span.
• Refactor copy util with Web API.
• Releases an existing object URL.
• Optimize Trace Profiling widget.
• Implement Async Profiling widget.
• Fix inaccurate data query issue on endpoint topology page.
• Update browser dashboard for the new metrics.
• Visualize Snapshot on Alerting page.
• OAP self observability dashboard: Add JVM heap and direct memory used metrics.
• OAP self observability dashboard: Add watermark circuit break/recover metrics.
• Implement the legend selector in metrics charts.
• Fix repetitive names in router.
• Bump up dependencies.
• Fixes tooltips cannot completely display metrics information.
• Fix time range when generate link.
• Add skywalking go agent self observability menu.
• add topN selector for endpoint list.

Documentation

• Update release document to adopt newly added revision-based process.
• Improve BanyanDB documentation.
• Improve component-libraries documentation.
• Improve configuration-vocabulary documentation.
• Add Get Effective TTL Configurations API documentation.
• Add Status APIs docs.
• Simplified the release process with removing maven central publish relative processes.
• Add Circuit Breaking mechanism doc.
• Add Get Node List in the Cluster API doc.
• Remove meter.md doc, because mal.md has covered all the content.
• Merge browser-http-api-protocol.md doc into browser-protocol.md.

All issues and pull requests are here

New Contributors

• @ShyunnY made their first contribution in https://github.com/apache/skywalking/pull/12676
• @zjh129 made their first contribution in https://github.com/apache/skywalking/pull/12700
• @zhengziyi0117 made their first contribution in https://github.com/apache/skywalking/pull/12671
• @tsonglew made their first contribution in https://github.com/apache/skywalking/pull/12778
• @kemalceng made their first contribution in https://github.com/apache/skywalking/pull/12827
• @cclauss made their first contribution in https://github.com/apache/skywalking/pull/12896
• @Super-Lu made their first contribution in https://github.com/apache/skywalking/pull/12897
• @hanwha-jesoos made their first contribution in https://github.com/apache/skywalking/pull/12935
• @MasamiYui made their first contribution in https://github.com/apache/skywalking/pull/13106

Full Changelog: https://github.com/apache/skywalking/compare/v10.1.0...v10.2.0