congqixia ba36f66a5c
fix: [2.3] Use server ctx instead of loopCtx for datacoord LivenessCheck (#31691) (#31747)
Cherry-pick from master
pr: #31691
See also #31689

Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
2024-04-02 23:30:33 -07:00
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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.