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Olga Revyakina 2020-10-25 05:38:54 +03:00
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## system.crash_log {#system-tables_crash_log}
# system.crash_log {#system-tables_crash_log}
Contains information about stack traces for fatal errors. The table does not exist in the database by default, it is created only when fatal errors occur.
@ -10,11 +10,11 @@ Columns:
- `signal` ([Int32](../../sql-reference/data-types/int-uint.md)) — Signal number.
- `thread_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Thread ID.
- `query_id` ([String](../../sql-reference/data-types/string.md)) — Query ID.
- `trace` ([Array](../../sql-reference/data-types/array.md)([UInt64](../../sql-reference/data-types/int-uint.md))) — Array of traces.
- `trace_full` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — Array of full traces.
- `trace` ([Array](../../sql-reference/data-types/array.md)([UInt64](../../sql-reference/data-types/int-uint.md))) — Stack trace at the moment of crash. Each element is a virtual memory address inside ClickHouse server process.
- `trace_full` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — Stack trace at the moment of crash. Each element contains a called method inside ClickHouse server process.
- `version` ([String](../../sql-reference/data-types/string.md)) — ClickHouse server version.
- `revision` ([UInt32](../../sql-reference/data-types/int-uint.md)) — ClickHouse server revision.
- `build_id` ([String](../../sql-reference/data-types/string.md)) — ClickHouse server build.
- `build_id` ([String](../../sql-reference/data-types/string.md)) — BuildID that is generated by compiler.
**Example**
@ -23,9 +23,12 @@ Query:
``` sql
SELECT * FROM system.crash_log ORDER BY event_time DESC LIMIT 1;
```
Result (not full):
``` text
Row 1:
──────
event_date: 2020-10-14
event_time: 2020-10-14 15:47:40
timestamp_ns: 1602679660271312710
@ -39,4 +42,7 @@ revision: 54442
build_id:
```
[Original article](https://clickhouse.tech/docs/en/operations/system_tables/crash_log)
**See also**
- [trace_log](../../operations/system_tables/trace_log.md) system table
[Original article](https://clickhouse.tech/docs/en/operations/system_tables/crash-log)

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# system.crash_log {#system-tables_crash_log}
Содержит информацию о трассировках стека для фатальных ошибок. Таблица не содержится в базе данных по умолчанию, а создается только при возникновении фатальных ошибок.
Колонки:
- `event_date` ([Datetime](../../sql-reference/data-types/datetime.md)) — Дата события.
- `event_time` ([Datetime](../../sql-reference/data-types/datetime.md)) — Время события.
- `timestamp_ns` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Время события с наносекундами.
- `signal` ([Int32](../../sql-reference/data-types/int-uint.md)) — Номер сигнала, пришедшего в поток.
- `thread_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Идентификатор треда.
- `query_id` ([String](../../sql-reference/data-types/string.md)) — Идентификатор запроса.
- `trace` ([Array](../../sql-reference/data-types/array.md)([UInt64](../../sql-reference/data-types/int-uint.md))) — Трассировка стека в момент ошибки. Представляет собой список физических адресов, по которым расположены вызываемые методы.
- `trace_full` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — Трассировка стека в момент ошибки. Содержит вызываемые методы.
- `version` ([String](../../sql-reference/data-types/string.md)) — Версия сервера ClickHouse.
- `revision` ([UInt32](../../sql-reference/data-types/int-uint.md)) — Ревизия сборки сервера ClickHouse.
- `build_id` ([String](../../sql-reference/data-types/string.md)) — BuildID, сгенерированный компилятором.
**Пример**
Запрос:
``` sql
SELECT * FROM system.crash_log ORDER BY event_time DESC LIMIT 1;
```
Результат (приведён не полностью):
``` text
Row 1:
──────
event_date: 2020-10-14
event_time: 2020-10-14 15:47:40
timestamp_ns: 1602679660271312710
signal: 11
thread_id: 23624
query_id: 428aab7c-8f5c-44e9-9607-d16b44467e69
trace: [188531193,...]
trace_full: ['3. DB::(anonymous namespace)::FunctionFormatReadableTimeDelta::executeImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> >&, std::__1::vector<unsigned long, std::__1::allocator<unsigned long> > const&, unsigned long, unsigned long) const @ 0xb3cc1f9 in /home/username/work/ClickHouse/build/programs/clickhouse',...]
version: ClickHouse 20.11.1.1
revision: 54442
build_id:
```
**См. также**
- Системная таблица [trace_log](../../operations/system_tables/trace_log.md)
[Original article](https://clickhouse.tech/docs/en/operations/system_tables/crash-log)