mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-17 21:24:28 +00:00
54 lines
2.2 KiB
Markdown
54 lines
2.2 KiB
Markdown
# system.opentelemetry_span_log {#system_tables-opentelemetry_span_log}
|
|
|
|
Contains information about [trace spans](https://opentracing.io/docs/overview/spans/) for executed queries.
|
|
|
|
Columns:
|
|
|
|
- `trace_id` ([UUID](../../sql-reference/data-types/uuid.md) — ID of the trace for executed query.
|
|
|
|
- `span_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — ID of the `trace span`.
|
|
|
|
- `parent_span_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — ID of the parent `trace span`.
|
|
|
|
- `operation_name` ([String](../../sql-reference/data-types/string.md)) — The name of the operation.
|
|
|
|
- `start_time_us` ([UInt64](../../sql-reference/data-types/int-uint.md)) — The start time of the `trace span` (in microseconds).
|
|
|
|
- `finish_time_us` ([UInt64](../../sql-reference/data-types/int-uint.md)) — The finish time of the `trace span` (in microseconds).
|
|
|
|
- `finish_date` ([Date](../../sql-reference/data-types/date.md)) — The finish date of the `trace span`.
|
|
|
|
- `attribute.names` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — [Attribute](https://opentelemetry.io/docs/go/instrumentation/#attributes) names depending on the `trace span`. They are filled in according to the recommendations in the [OpenTelemetry](https://opentelemetry.io/) standard.
|
|
|
|
- `attribute.values` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — Attribute values depending on the `trace span`. They are filled in according to the recommendations in the `OpenTelemetry` standard.
|
|
|
|
**Example**
|
|
|
|
Query:
|
|
|
|
``` sql
|
|
SELECT * FROM system.opentelemetry_span_log LIMIT 1 FORMAT Vertical;
|
|
```
|
|
|
|
Result:
|
|
|
|
``` text
|
|
Row 1:
|
|
──────
|
|
trace_id: cdab0847-0d62-61d5-4d38-dd65b19a1914
|
|
span_id: 701487461015578150
|
|
parent_span_id: 2991972114672045096
|
|
operation_name: DB::Block DB::InterpreterSelectQuery::getSampleBlockImpl()
|
|
start_time_us: 1612374594529090
|
|
finish_time_us: 1612374594529108
|
|
finish_date: 2021-02-03
|
|
attribute.names: []
|
|
attribute.values: []
|
|
```
|
|
|
|
**See Also**
|
|
|
|
- [OpenTelemetry](../../operations/opentelemetry.md)
|
|
|
|
[Original article](https://clickhouse.tech/docs/en/operations/system_tables/opentelemetry_span_log) <!--hide-->
|