wei liu 3a7a08f2b3
enhance: [2.5] Add granular flush targets support for FlushAll operation (#44431)
issue: #44156
pr: #44234
Enhance FlushAll functionality to support targeting specific collections
within databases instead of only database-level flushing.

Changes include:

- Add FlushAllTarget message in data_coord.proto for granular targeting
- Support collection-specific flush operations within databases
- Maintain backward compatibility with deprecated db_name field

This enhancement allows users to flush specific collections without
affecting other collections in the same database, providing more precise
control over data persistence operations.

---------

Signed-off-by: Wei Liu <wei.liu@zilliz.com>
2025-09-28 10:37:06 +08:00
..
2023-09-21 09:45:27 +08:00
2023-09-26 17:15:27 +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.