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This PR removes all the commented code and files from PR #28320 For naming issue: - Renaming `MinCheckpoint` to `EarliestPosition`, see #28320 comment - Renaming `writebuffer.Mananger` to `BufferMananger`, see #27874 comment Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
Data Node
DataNode is the component to write insert and delete messages into persistent blob storage, for example MinIO or S3.
Dependency
- KV store: a kv store that persists messages into blob storage.
- Message stream: receive messages and publish imformation
- Root Coordinator: get the latest unique IDs.
- Data Coordinator: get the flush information and which message stream to subscribe.