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2.6 KiB
2.6 KiB
system.distributed_ddl_queue
包含有关在集群上执行的分布式ddl查询(集群环境)的信息.
列信息:
entry
(String) — 查询ID.host_name
(String) — 主机名称.host_address
(String) — 主机名解析到的IP地址.port
(UInt16) — 主机端口.status
(Enum8) — 查询状态.cluster
(String) — 群集名称.query
(String) — 执行查询.initiator
(String) — 执行查询的节点.query_start_time
(DateTime) — 查询开始时间.query_finish_time
(DateTime) — 查询结束时间.query_duration_ms
(UInt64) — 查询执行时间(毫秒).exception_code
(Enum8) — 来自于ZooKeeper的异常代码.
示例
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.