yah01 2dca3688a0
Fix data race in DataCoord unit test (#19469)
Refine the DataCoord initialization

Signed-off-by: yah01 <yang.cen@zilliz.com>

Signed-off-by: yah01 <yang.cen@zilliz.com>
2022-09-27 18:04:53 +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.