From 545d187ef7e349d29b9fba5a84d859808ce37f32 Mon Sep 17 00:00:00 2001 From: Olga Revyakina Date: Wed, 21 Oct 2020 19:32:52 +0300 Subject: [PATCH] Docs for the crash_log table (en) --- docs/en/operations/system-tables/crash_log.md | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 docs/en/operations/system-tables/crash_log.md diff --git a/docs/en/operations/system-tables/crash_log.md b/docs/en/operations/system-tables/crash_log.md new file mode 100644 index 00000000000..d38ce31584f --- /dev/null +++ b/docs/en/operations/system-tables/crash_log.md @@ -0,0 +1,42 @@ +## 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. + +Columns: + +- `event_date` ([Datetime](../../sql-reference/data-types/datetime.md)) — Date of the event. +- `event_time` ([Datetime](../../sql-reference/data-types/datetime.md)) — Time of the event. +- `timestamp_ns` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Timestamp of the event with nanoseconds. +- `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. +- `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. + +**Example** + +Query: + +``` sql +SELECT * FROM system.crash_log ORDER BY event_time DESC LIMIT 1; +``` +Result (not full): + +``` text +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 >&, std::__1::vector > 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: +``` + +[Original article](https://clickhouse.tech/docs/en/operations/system_tables/crash_log)