milvus/internal/datacoord/README.md
zwd1208 08ca551a75
[skip ci]Change etcd to lowercase (#9983)
Signed-off-by: Weida Zhu <weida.zhu@zilliz.com>
2021-10-15 18:58:37 +08:00

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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.