v1.38.0

🛑 Breaking changes 🛑

• k8s: Rename k8s.node.allocatable.* metrics to k8s.node.*.allocatable (#2973)
  Renamed metrics:

  • k8s.node.allocatable.cpu -> k8s.node.cpu.allocatable
  • k8s.node.allocatable.memory -> k8s.node.memory.allocatable
  • k8s.node.allocatable.ephemeral_storage -> k8s.node.ephemeral_storage.allocatable

• k8s: Fix plural-named updowncounter k8s metrics (#2301)
  Renamed metrics:

  • k8s.node.allocatable.pods -> k8s.node.pod.allocatable
  • k8s.daemonset.current_scheduled_nodes -> k8s.daemonset.node.current_scheduled
  • k8s.daemonset.desired_scheduled_nodes -> k8s.daemonset.node.desired_scheduled
  • k8s.daemonset.misscheduled_nodes -> k8s.daemonset.node.misscheduled
  • k8s.daemonset.ready_nodes -> k8s.daemonset.node.ready
  • k8s.job.active_pods -> k8s.job.pod.active
  • k8s.job.failed_pods -> k8s.job.pod.failed
  • k8s.job.successful_pods -> k8s.job.pod.successful
  • k8s.job.desired_successful_pods -> k8s.job.pod.desired_successful
  • k8s.job.max_parallel_pods -> k8s.job.pod.max_parallel
  • k8s.cronjob.active_jobs -> k8s.cronjob.job.active
  • k8s.deployment.desired_pods -> k8s.deployment.pod.desired
  • k8s.deployment.available_pods -> k8s.deployment.pod.available
  • k8s.replicaset.desired_pods -> k8s.replicaset.pod.desired
  • k8s.replicaset.available_pods -> k8s.replicaset.pod.available
  • k8s.replicationcontroller.desired_pods -> k8s.replicationcontroller.pod.desired
  • k8s.replicationcontroller.available_pods -> k8s.replicationcontroller.pod.available
  • k8s.statefulset.desired_pods -> k8s.statefulset.pod.desired
  • k8s.statefulset.ready_pods -> k8s.statefulset.pod.ready
  • k8s.statefulset.current_pods -> k8s.statefulset.pod.current
  • k8s.statefulset.updated_pods -> k8s.statefulset.pod.updated
  • k8s.hpa.desired_pods -> k8s.hpa.pod.desired
  • k8s.hpa.current_pods -> k8s.hpa.pod.current
  • k8s.hpa.max_pods -> k8s.hpa.pod.max
  • k8s.hpa.min_pods -> k8s.hpa.pod.min

• process: Renames process.context_switch_type to process.context_switch.type (#1501)

• rpc: Attributes for rpc metric are now explicitly associated with metrics. (#2311)
  The breaking change is due to the removal of network.type from the metrics.

• system: Mark cpu.logical_number attribute as opt-in for system.cpu.time and system.cpu.utilization metrics (#2932)

• system, process: Rename system.process.status to process.state (#1803)

• system, process: Replace system.paging.type and process.paging.fault_type with system.paging.fault.type (#1803)

• v8js: Rename metric v8js.heap.space.available_size to v8js.memory.heap.space.available_size.
  Rename metric v8js.heap.space.physical_size to v8js.memory.heap.space.physical_size.
  (#2856)

🚩 Deprecations 🚩

• rpc: Deprecate rpc..requests_per_rpc and rpc..responses_per_rpc metrics. (#2784)
• system: Fix deprecation of system.cpu.logical_number (#2700)

💡 Enhancements 💡

• app: Add app.screen.name attribute to capture application screen names. (#2743)

• cicd: Add guidance on per pipeline run metrics (#1184)

• cicd: Improve the description of cicd.worker entities. (#1191)

• cicd: Add guidance on CI/CD logs (#1714)

• db: Add database context propagation via V$SESSION.ACTION for SQL Server (#2610)

• gcp: Document gcp.apphub_destination.* attributes (#2649)

• gen-ai: Add participant's name on generative AI chat message. (#2943)

• gen-ai: Add tool definitions and execution details for Single and Multi-Agent systems

• Add 'gen_ai.tool.definitions' attribute to 'invoke_agent' span

• Add 'gen_ai.tool.definitions' attribute to 'attributes.gen_ai.inference.client' attribute group.

• Add 'gen_ai.tool.call.arguments' and 'gen_ai.tool.call.result' attributes to 'execute_tool' span.
  (#2444, #591)

• gen-ai: Introducing Evaluation Event in GenAI Semantic Conventions to represent and capture evaluation results.
  (#2563)

• gen-ai: invoke_agent spans now include span kind (CLIENT/INTERNAL) guidance and clarify when server.* attributes should be set. (#2837)

• gen-ai: Add reasoning content message parts for chat messages. (#1965)

• gen_ai: Add gen_ai.embeddings.dimension.count attribute to capture the dimension count of embeddings. (#2361)
  The gen_ai.embeddings.dimension.count is added to the span.gen_ai.embeddings.client span
  and gen_ai.client.operation.duration metric.

• gen_ai: Add multimodal uri, file, and blob parts to GenAI JSON Schemas (#1556)

• gen_ai, db, enduser, messaging: Fix deprecation reasons - use uncategorized when attribute type is changing. Fix missing/invalid deprecations on (deprecated) gen_ai.system attribute.
  (#2688)

• http: Adds in the HTTP QUERY method. (#2642)

• http: Clarify value for http.route attribute may contain static and dynamic segments. (#2616)

• k8s: Add container CPU limit/request utilization metrics. (#1489)

• k8s: Add k8s.pod.status.phase and k8s.pod.status.reason metrics (#2075)

• k8s: Add memory metrics for k8s.node, k8s.pod and container resources (#2776)

• nfs: Add nfs.* metrics, along with supporting rpc.onc.*/rpc.nfs.* attributes. (#39978)

• openshift: Adds metrics for openshift's clusterquota (#2078)

• pprof: Introduce pprof attributes. (#2522)

• pprof: add attribute pprof.profile.comment. (#2861)

• process: Increases the amount of attributes which are used to describe the running process. (#2655)

• rpc: JSON-RPC now has its own span definition. (#2228)

• rpc: Adds in network.protocol.name and network.protocol.version to all RPC spans and metrics. (#2719)

• rpc: Adds in explicit span definitions for Connect RPC. (#2720)

• rpc: Remove network.type attribute from RPC spans and metrics (#2851)
  The network.type attribute is no longer included in RPC semantic conventions.
  It remains available in the attribute registry for opt-in usage when needed.

• rpc: Adds in explicitly defined grpc spans. (#2720)

• rpc: Update the RPC stability warning and guidance for instrumentation authors (#2718)

• rpc: The rpc spans now contains the error.type attribute to report the type of error that occurred. (#2812)

🧰 Bug fixes 🧰

• dns: Simplify dns.question.name note to remove incorrect custom encoding requirements (#2143)
  The note now simply states that the domain name should be captured as it appears in the DNS query
  without any additional normalization, removing the previous incorrect custom encoding requirements.

• nfs: nfs/metrics.yaml: nfs.server.net.count: add missing network.transport attribute. Implementation not merged, so not a breaking change. (#39978)

• system: The system.network.dropped and system.network.packets metrics have been added as deprecated rather than being removed. (#2828)

New Contributors

• @singankit made their first contribution in #2563
• @ShipraJain01 made their first contribution in #2702
• @lcian made their first contribution in #2755
• @johnleslie made their first contribution in #2287
• @matt-hensley made their first contribution in #2734
• @limhjgrace made their first contribution in #2744
• @aabmass made their first contribution in #2956
• @vitorvasc made their first contribution in #2954
• @yiyuan-he made their first contribution in #2881

Full Changelog: v1.37.0...v1.38.0