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

  1. SELECT *
  2. FROM system.distributed_ddl_queue
  3. WHERE cluster = 'test_cluster'
  4. LIMIT 2
  5. FORMAT Vertical
  7. Query id: f544e72a-6641-43f1-836b-24baa1c9632a
  9. Row 1:
  10. ──────
  11. entry:             query-0000000000
  12. host_name:         clickhouse01
  13. host_address:      172.23.0.11
  14. port:              9000
  15. status:            Finished
  16. cluster:           test_cluster
  17. query:             CREATE DATABASE test_db UUID '4a82697e-c85e-4e5b-a01e-a36f2a758456' ON CLUSTER test_cluster
  18. initiator:         clickhouse01:9000
  19. query_start_time:  2020-12-30 13:07:51
  20. query_finish_time: 2020-12-30 13:07:51
  21. query_duration_ms: 6
  22. exception_code:    ZOK
  24. Row 2:
  25. ──────
  26. entry:             query-0000000000
  27. host_name:         clickhouse02
  28. host_address:      172.23.0.12
  29. port:              9000
  30. status:            Finished
  31. cluster:           test_cluster
  32. query:             CREATE DATABASE test_db UUID '4a82697e-c85e-4e5b-a01e-a36f2a758456' ON CLUSTER test_cluster
  33. initiator:         clickhouse01:9000
  34. query_start_time:  2020-12-30 13:07:51
  35. query_finish_time: 2020-12-30 13:07:51
  36. query_duration_ms: 6
  37. exception_code:    ZOK
  39. 2 rows in set. Elapsed: 0.025 sec.

原始文章