Zhen Ye f47ab31f23
enhance: remove redundant resource key watch operation, just keep consistency of wal (#40235)
issue: #38399
related PR: #39522

- Just implement exclusive broadcaster between broadcast message with
same resource key to keep same order in different wal.
- After simplify the broadcast model, original watch-based broadcast is
too complicated and redundant, remove it.

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Signed-off-by: chyezh <chyezh@outlook.com>
2025-03-03 14:40:05 +08:00
..
2023-09-21 09:45:27 +08:00
2023-09-26 17:15:27 +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.