congqixia f31a20faad
fix: [Backport] Mark channel checkpoint dropped prevent cp lag metrics leakage (#32454) (#33198)
Cherry-pick from 2.3
pr: #32454
See also #31506 #31508

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Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
2024-05-21 11:59:39 +08:00
..
2023-09-21 09:45:27 +08:00
2023-09-21 09:45:27 +08:00
2023-09-21 09:45:27 +08:00
2023-09-26 17:15:27 +08:00
2021-11-16 15:41:11 +08:00

Data Coordinator

Data cooridnator(datacoord for short) is the component to organize DataNodes and segments allocations.

Dependency

  • KV store: a kv store has all the meta info datacoord needs to operate. (etcd)
  • Message stream: a message stream to communicate statistics information with data nodes. (Pulsar)
  • Root Coordinator: timestamp, id and meta source.
  • Data Node(s): could be an instance or a cluster, actual worker group handles data modification operations.