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2.9 KiB
2.9 KiB
slug |
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/en/operations/system-tables/opentelemetry_span_log |
opentelemetry_span_log
Contains information about trace spans for executed queries.
Columns:
trace_id
(UUID) — ID of the trace for executed query.span_id
(UInt64) — ID of thetrace span
.parent_span_id
(UInt64) — ID of the parenttrace span
.operation_name
(String) — The name of the operation.kind
(Enum8) — The SpanKind of the span.INTERNAL
— Indicates that the span represents an internal operation within an application.SERVER
— Indicates that the span covers server-side handling of a synchronous RPC or other remote request.CLIENT
— Indicates that the span describes a request to some remote service.PRODUCER
— Indicates that the span describes the initiators of an asynchronous request. This parent span will often end before the corresponding child CONSUMER span, possibly even before the child span starts.CONSUMER
- Indicates that the span describes a child of an asynchronous PRODUCER request.
start_time_us
(UInt64) — The start time of thetrace span
(in microseconds).finish_time_us
(UInt64) — The finish time of thetrace span
(in microseconds).finish_date
(Date) — The finish date of thetrace span
.attribute.names
(Array(String)) — Attribute names depending on thetrace span
. They are filled in according to the recommendations in the OpenTelemetry standard.attribute.values
(Array(String)) — Attribute values depending on thetrace span
. They are filled in according to the recommendations in theOpenTelemetry
standard.
Example
Query:
SELECT * FROM system.opentelemetry_span_log LIMIT 1 FORMAT Vertical;
Result:
Row 1:
──────
trace_id: cdab0847-0d62-61d5-4d38-dd65b19a1914
span_id: 701487461015578150
parent_span_id: 2991972114672045096
operation_name: DB::Block DB::InterpreterSelectQuery::getSampleBlockImpl()
kind: INTERNAL
start_time_us: 1612374594529090
finish_time_us: 1612374594529108
finish_date: 2021-02-03
attribute.names: []
attribute.values: []
See Also