XuanYang-cn 5494f3c318
Remove offLineNodes from watch states check (#16347)
This PR also
- adds more information in log
- makes Session able to logged by zap.Any/zap.String

Signed-off-by: yangxuan <xuan.yang@zilliz.com>
2022-04-01 22:33:29 +08:00
..
2022-02-18 18:29:50 +08:00
2022-03-15 21:51:21 +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.