2021-09-17 23:57:55 +08:00
|
|
|
# Data Coordinator
|
|
|
|
|
|
|
|
|
|
Data cooridnator(datacoord for short) is the component to organize DataNodes and segments allocations.
|
|
|
|
|
|
|
|
|
|
## Dependency
|
|
|
|
|
|
2021-10-15 18:58:37 +08:00
|
|
|
- KV store: a kv store has all the meta info datacoord needs to operate. (etcd)
|
2021-09-17 23:57:55 +08:00
|
|
|
- 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.
|
