IoTHubDistributedTracing

The distributed tracing category tracks the trace-id and span-id for messages that carry the trace context header. To fully enable these logs, client-side code must be updated by following https://aka.ms/iottracing

Table attributes

Attribute	Value
Resource types	microsoft.devices/iothubs
Categories	Azure Resources
Solutions	LogManagement
Basic log	No
Ingestion-time transformation	No
Sample Queries	-

Columns

Column	Type	Description
_BilledSize	real	The record size in bytes
CallerLocalTimeUtc	datetime	Creation time of the message as reported by the device local clock
Category	string	Category of the log event
DependencyType	string	For outgoing requests (dependencies), describes type of the dependency
DurationMs	int	Duration of the operation in milliseconds
EventKind	string	Kind of the event
InstanceId	string	Name of the instance that processed request
_IsBillable	string	Specifies whether ingesting the data is billable. When _IsBillable is false ingestion isn't billed to your Azure account
IsRoutingEnabled	bool	Either true or false, indicates whether or not message routing is enabled in the IoT Hub
Level	string	Level of severity of the event
Location	string	Azure region in which the Iot Hub is located
MessageSize	int	The size of the message in bytes
OperationName	string	Operation name of the event
ParentId	string	Unique identifier of current span within trace (16 hex characters). A request without a parent id is the root of the trace.
_ResourceId	string	A unique identifier for the resource that the record is associated with
ResourceSubName	string	Name of sub-component that reports this message
ResultDescription	string	Result description of the event, typically elaborates on the error
ResultSignature	int	The status code of the event
ResultType	string	Result type of the event, typically empty unless it's an error
SourceSystem	string	The type of agent the event was collected by. For example, OpsManager for Windows agent, either direct connect or Operations Manager, Linux for all Linux agents, or Azure for Azure Diagnostics
SpanId	string	Unique identifier of current span within trace (16 hex characters)
_SubscriptionId	string	A unique identifier for the subscription that the record is associated with
TenantId	string	The Log Analytics workspace ID
TimeGenerated	datetime	Time at which this event is generated and logged
TraceFlags	int	A bit field for controlling tracing options. For example, sampling and trace level.
TraceId	string	Globally unique identifier of the trace (32 hex characters)
Type	string	The name of the table
Uri	string	Absolute request URI