Semantic conventionsv1.44.0

4 Aug 2026since v1.43.0

3 breaking21 notable92 editorial

From the upstream release notes

browser: Reworked the browser.web_vital event - moved name/value/delta/id from the event body to browser.web_vital.* attributes, and added new attributes per current instrumentation.
k8s: Rename k8s.node.memory.paging.faults, k8s.pod.memory.paging.faults and container.memory.paging.faults metrics by dropping the memory namespace segment.
k8s: Change {container, k8s.pod, k8s.node}.memory.usage to updowncounter
cloud: Add Scaleway Cloud to cloud.provider and scaleway_cloud_compute to cloud.platform
db: Clarify db.query.parameter.<key> semantics around sensitive data handling.
faas: The general FaaS attributes are now defined on the FaaS spans that use them, so each span documents its full attribute set.
host: Update the recommendations to use full path to commands when collecting host.id attribute value.
hw: Per-component hw.errors and hw.status metrics now document the full set of component-specific attributes (e.g. hw.model, hw.vendor) alongside the generic ones.
k8s: Add k8s.node.filesystem.inode.count and k8s.node.filesystem.inode.free metrics to track Kubernetes node root filesystem inode capacity and usage.
k8s: Promote a selection of container and K8s memory metrics to release_candidate

Read the full release notes

Breaking3

Changes to definitions the project had already marked stable or release candidate.

instrumentmetriccontainer.memory.usageInstrument changed from counter to updowncounter.
instrumentmetrick8s.node.memory.usageInstrument changed from gauge to updowncounter.
instrumentmetrick8s.pod.memory.usageInstrument changed from gauge to updowncounter.

Notable21

removedsignalspan.faas.clientRemoved from the registry (was development).
removedsignalspan.faas.datasource.serverRemoved from the registry (was development).
removedsignalspan.faas.serverRemoved from the registry (was development).
removedsignalspan.faas.timer.serverRemoved from the registry (was development).
renamedmetriccontainer.memory.paging.faultsRenamed to container.paging.faults.
renamedmetrick8s.node.memory.paging.faultsRenamed to k8s.node.paging.faults.
renamedmetrick8s.pod.memory.paging.faultsRenamed to k8s.pod.paging.faults.
deprecatedattributedb.redis.database_indexReplaced by db.namespace (string).
stabilitymetriccontainer.memory.availablePromoted to release_candidate.
stabilitymetriccontainer.memory.rssPromoted to release_candidate.
stabilitymetriccontainer.memory.usagePromoted to release_candidate.
stabilitymetriccontainer.memory.working_setPromoted to release_candidate.
stabilitymetrick8s.node.memory.availablePromoted to release_candidate.
stabilitymetrick8s.node.memory.rssPromoted to release_candidate.
stabilitymetrick8s.node.memory.usagePromoted to release_candidate.
stabilitymetrick8s.node.memory.working_setPromoted to release_candidate.
stabilitymetrick8s.pod.memory.availablePromoted to release_candidate.
stabilitymetrick8s.pod.memory.rssPromoted to release_candidate.
stabilitymetrick8s.pod.memory.usagePromoted to release_candidate.
stabilitymetrick8s.pod.memory.working_setPromoted to release_candidate.
stabilityattributenetwork.interface.namePromoted to release_candidate.

Editorial92

enumattributecloud.platformEnum members changed (41 to 42).
enumattributecloud.providerEnum members changed (11 to 12).
addedattributebrowser.web_vital.deltaThe delta between the current value and the last-reported value. See [delta](https://github.com/GoogleChrome/web-vitals?tab=readme-ov-file#report-only-the-delt...
addedattributebrowser.web_vital.idA unique ID representing this particular metric instance.
addedattributebrowser.web_vital.nameName of the web vital.
addedattributebrowser.web_vital.navigation_typeThe type of navigation, as reported by the Navigation Timing API, with additiona...
addedattributebrowser.web_vital.ratingThe rating of the web vital value against the "good", "needs improvement", and "poor" thresholds defined for the metric.
addedattributebrowser.web_vital.valueValue of the web vital.
addedmetriccontainer.paging.faultsContainer memory paging faults.
addedsignalfaas.clientThis span represents an outgoing call to a FaaS service.
addedsignalfaas.datasource.serverThis span represents the server side of a FaaS invocation triggered in response to some data source operation such as a database or filesystem read/write.
addedsignalfaas.serverThis span represents the server (incoming) side of a FaaS invocation.
addedsignalfaas.timer.serverThis span represents the server side of a FaaS invocation triggered by a timer.
addedmetrick8s.node.filesystem.inode.countThe total inodes in the node's root filesystem.
addedmetrick8s.node.filesystem.inode.freeThe free inodes in the node's root filesystem.
addedmetrick8s.node.paging.faultsNode memory paging faults.
addedmetrick8s.pod.paging.faultsPod memory paging faults.
addedsignalmessaging.create.producerDescribes a message being created or passed to a client library for sending.
addedsignalmessaging.eventhubs.generic.clientDescribes an Azure Event Hubs client operation that is not covered by a more specific (create, send, receive, process, or settle) span.
addedattributemessaging.kafka.cluster.idThe Kafka cluster ID, obtained from the broker metadata exposed through the Kafka client (or AdminClient) API.
addedsignalmessaging.process.consumerDescribes one or more messages being processed by a consumer (push-based).
addedsignalmessaging.receive.clientDescribes one or more messages being requested by a consumer (pull-based).
addedsignalmessaging.send.clientDescribes one or more messages being sent to an intermediary when a separate message creation context ("Create" span or custom context) already exists.
addedsignalmessaging.send.producerDescribes one or more messages being sent to an intermediary, where the "Send" span's context is used as the message creation context.
addedsignalmessaging.servicebus.generic.clientDescribes an Azure Service Bus client operation that is not covered by a more specific (create, send, receive, process, or settle) span.
addedsignalmessaging.settle.clientDescribes one or more messages being settled.
addedmetricprocess.disk.operationsNumber of disk operations performed by the process.
addedmetricprocess.memory.utilizationPercentage of total physical memory that is used by the process.
addedmetricprocess.signals_pendingNumber of pending signals for the process.
addedsignalspan.graphql.serverThis span represents an incoming operation on a GraphQL server implementation.
addedmetricsystem.process.limitThe maximum number of concurrent processes/tasks allowed by the operating system.
guidanceattributeartifact.filenameGuidance note changed.
guidanceattributecloudfoundry.system.instance.idGuidance note changed.
guidancemetriccontainer.cpu.usageGuidance note changed.
guidanceattributecontainer.image.idGuidance note changed.
guidanceattributecontainer.labelGuidance note changed.
guidancemetriccontainer.memory.availableGuidance note changed.
guidancemetriccontainer.memory.rssGuidance note changed.
guidancemetriccontainer.memory.usageGuidance note changed.
guidancemetriccontainer.memory.working_setGuidance note changed.
guidanceattributedb.query.parameterGuidance note changed.
guidanceattributefile.extensionGuidance note changed.
guidanceattributefile.fork_nameGuidance note changed.
guidancemetrick8s.node.cpu.usageGuidance note changed.
guidancemetrick8s.node.memory.usageGuidance note changed.
guidancemetrick8s.node.system_container.cpu.usageGuidance note changed.
guidancemetrick8s.pod.cpu.usageGuidance note changed.
guidancemetrick8s.pod.memory.usageGuidance note changed.
guidanceattributelog.record.uidGuidance note changed.
guidanceattributemessaging.destination.nameGuidance note changed.
guidanceattributemessaging.destination.templateGuidance note changed.
guidanceattributeoracle.db.serviceGuidance note changed.
guidancemetricotel.sdk.exporter.operation.durationGuidance note changed.
guidancemetricotel.sdk.processor.log.processedGuidance note changed.
guidancemetricotel.sdk.processor.span.processedGuidance note changed.
guidanceattributerpc.methodGuidance note changed.
guidancesignalspan.cicd.pipeline.run.serverGuidance note changed.
guidancesignalspan.dotnet.dns.lookup.internalGuidance note changed.
guidancesignalspan.gen_ai.inference.clientGuidance note changed.
guidanceattributeurl.extensionGuidance note changed.
wordingattributeandroid.os.api_levelUniquely identifies the framework API revision offered by a version (os.version) of the Android operating system. More information can be found in the [Andro...
wordingattributeapp.crash.idA unique identifier representing an instance of an end user facing app crash.
wordingattributeartifact.attestation.idThe ID of the build software attestation.
wordingattributeclient.addressClient address - domain name if available without reverse DNS lookup; otherwise, IP address or UNIX domain socket name.
wordingattributecode.file.pathThe source code filename that identifies the code unit as uniquely as possible (preferably an absolute file path). This attribute MUST NOT be used on the Profi...
wordingmetriccontainer.cpu.timeTotal CPU time consumed.
wordingattributecontainer.image.repo_digestsRepository digests of the container image as provided by the container runtime.
wordingmetriccontainer.memory.paging.faultsDeprecated, use container.paging.faults instead.
wordingattributedeployment.idThe ID of the deployment.
wordingattributedestination.addressDestination address - domain name if available without reverse DNS lookup; otherwise, IP address or UNIX domain socket name.
wordingsignalevent.gen_ai.evaluation.resultThis event captures the result of evaluating GenAI output for quality, accuracy, or other characteristics. This event SHOULD be parented to GenAI operation spa...
wordingattributefile.pathFull path to the file, including the filename. It should include the drive letter, when appropriate.
wordingattributehost.nameName of the host. On UNIX systems, it may contain what the hostname command returns, or the fully qualified hostname, or another name specified by the user.
wordingmetrick8s.node.cpu.allocatableAmount of CPU allocatable on the node.
wordingmetrick8s.node.memory.paging.faultsDeprecated, use k8s.node.paging.faults instead.
wordingmetrick8s.pod.memory.paging.faultsDeprecated, use k8s.pod.paging.faults instead.
wordingattributemcp.resource.uriThe value of the resource URI.
wordingattributemessaging.gcp_pubsub.message.ack_idThe ack ID for a given message.
wordingattributemessaging.rocketmq.message.keysKey(s) of message, another way to mark message besides message ID.
wordingattributenetwork.connection.subtypeThis describes more details regarding the connection.type. It may be the type of cell technology connection, but it could be used for describing details about ...
wordingattributenetwork.local.addressLocal address of the network connection - IP address or UNIX domain socket name.
wordingattributenetwork.peer.addressPeer address of the network connection - IP address or UNIX domain socket name.
wordingattributepprof.profile.drop_framesFrames with Function.function_name fully matching the regular expression will be dropped from the samples, along with their successors.
wordingattributepprof.profile.keep_framesFrames with Function.function_name fully matching the regular expression will be kept, even if it matches drop_frames.
wordingmetricprocess.unix.file_descriptor.countNumber of UNIX file descriptors in use by the process.
wordingattributeserver.addressServer domain name if available without reverse DNS lookup; otherwise, IP address or UNIX domain socket name.
wordingattributesession.idA unique ID to identify a session.
wordingattributesource.addressSource address - domain name if available without reverse DNS lookup; otherwise, IP address or UNIX domain socket name.
wordingmetricsystem.paging.usageUNIX swap or windows pagefile usage.
wordingmetricsystem.paging.utilizationSwap (UNIX) or pagefile (windows) utilization.
wordingattributeurl.registered_domainThe highest registered URL domain, stripped of the subdomain.
wordingattributeurl.subdomainThe subdomain portion of a fully qualified domain name includes all of the names except the hostname under the registered_domain. In a partially qualified doma...