MrPresent-Han 5f4ac437b2
enhance: [Cherry-pick] Moving etcd client into session (#27069) (#28996)
relate: #26694
pr: https://github.com/milvus-io/milvus/pull/27069

Signed-off-by: Filip Haltmayer <filip.haltmayer@zilliz.com>
Signed-off-by: MrPresent-Han <chun.han@zilliz.com>
Co-authored-by: Filip Haltmayer <81822489+filip-halt@users.noreply.github.com>
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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.