mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-29 02:52:13 +00:00
65 lines
3.0 KiB
Markdown
65 lines
3.0 KiB
Markdown
|
# system.distributed_ddl_queue {#system_tables-distributed_ddl_queue}
|
|||
|
|
|
|||
|
|
Содержит информацию о [распределенных ddl запросах (секция ON CLUSTER)](../../sql-reference/distributed-ddl.md), которые были выполнены на кластере.
|
|||
|
|
|
|||
|
|
Столбцы:
|
|||
|
|
|
|||
|
|
- `entry` ([String](../../sql-reference/data-types/string.md)) — идентификатор запроса.
|
|||
|
|
- `host_name` ([String](../../sql-reference/data-types/string.md)) — имя хоста.
|
|||
|
|
- `host_address` ([String](../../sql-reference/data-types/string.md)) — IP-адрес хоста.
|
|||
|
|
- `port` ([UInt16](../../sql-reference/data-types/int-uint.md)) — порт для соединения с сервером.
|
|||
|
|
- `status` ([Enum8](../../sql-reference/data-types/enum.md)) — состояние запроса.
|
|||
|
|
- `cluster` ([String](../../sql-reference/data-types/string.md)) — имя кластера.
|
|||
|
|
- `query` ([String](../../sql-reference/data-types/string.md)) — выполненный запрос.
|
|||
|
|
- `initiator` ([String](../../sql-reference/data-types/string.md)) — узел, выполнивший запрос.
|
|||
|
|
- `query_start_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — время начала запроса.
|
|||
|
|
- `query_finish_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — время окончания запроса.
|
|||
|
|
- `query_duration_ms` ([UInt64](../../sql-reference/data-types/datetime64.md)) — продолжительность выполнения запроса (в миллисекундах).
|
|||
|
|
- `exception_code` ([Enum8](../../sql-reference/data-types/enum.md)) — код исключения из [ZooKeeper](../../operations/tips.md#zookeeper).
|
|||
|
|
|
|||
|
|
**Пример**
|
|||
|
|
|
|||
|
|
``` sql
|
|||
|
|
SELECT *
|
|||
|
|
FROM system.distributed_ddl_queue
|
|||
|
|
WHERE cluster = 'test_cluster'
|
|||
|
|
LIMIT 2
|
|||
|
|
FORMAT Vertical
|
|||
|
|
|
|||
|
|
Query id: f544e72a-6641-43f1-836b-24baa1c9632a
|
|||
|
|
|
|||
|
|
Row 1:
|
|||
|
|
──────
|
|||
|
|
entry: query-0000000000
|
|||
|
|
host_name: clickhouse01
|
|||
|
|
host_address: 172.23.0.11
|
|||
|
|
port: 9000
|
|||
|
|
status: Finished
|
|||
|
|
cluster: test_cluster
|
|||
|
|
query: CREATE DATABASE test_db UUID '4a82697e-c85e-4e5b-a01e-a36f2a758456' ON CLUSTER test_cluster
|
|||
|
|
initiator: clickhouse01:9000
|
|||
|
|
query_start_time: 2020-12-30 13:07:51
|
|||
|
|
query_finish_time: 2020-12-30 13:07:51
|
|||
|
|
query_duration_ms: 6
|
|||
|
|
exception_code: ZOK
|
|||
|
|
|
|||
|
|
Row 2:
|
|||
|
|
──────
|
|||
|
|
entry: query-0000000000
|
|||
|
|
host_name: clickhouse02
|
|||
|
|
host_address: 172.23.0.12
|
|||
|
|
port: 9000
|
|||
|
|
status: Finished
|
|||
|
|
cluster: test_cluster
|
|||
|
|
query: CREATE DATABASE test_db UUID '4a82697e-c85e-4e5b-a01e-a36f2a758456' ON CLUSTER test_cluster
|
|||
|
|
initiator: clickhouse01:9000
|
|||
|
|
query_start_time: 2020-12-30 13:07:51
|
|||
|
|
query_finish_time: 2020-12-30 13:07:51
|
|||
|
|
query_duration_ms: 6
|
|||
|
|
exception_code: ZOK
|
|||
|
|
|
|||
|
|
2 rows in set. Elapsed: 0.025 sec.
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
[Оригинальная статья](https://clickhouse.tech/docs/ru/operations/system_tables/distributed_ddl_queuedistributed_ddl_queue.md) <!--hide-->
|
|||
|
|
|