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Zhen Yeandsijie-ni-0214 0b0ad3ee8d feat: extract QueryView coordinator components (#54547)
issue: #40451

- Load and placement management: extract immutable load snapshots,
configuration recovery, replica allocation, and manual placement.
Restrict assignments and balancing to loaded partitions, with a
full-partition fast path, and preserve missing-segment error precedence
in manual balance.
- Scheduling and cost: reconcile background work in collection batches
using cache scanners so scoped events can run between batches. Compute
immutable LogicalSize weights in DataView using initialization-fixed
rowCount or insertBytes mode, a configurable 64KB unit, row-count
fallback, and segmentBaseCost=16; consume the weights throughout
placement, fanout, scoring, recovery, and movement. Keep physical rows
separate and use one LostStats flag.
- Schema and view lifecycle: persist the certified read schema in each
DataView, support direct logical transitions or waiting for the current
complete materialized projection, and bind new QueryViews to the
selected snapshot. Preserve old published-schema recovery, worker
synchronization, collection-scoped final-removal subscriptions, and
inactivity tracking based on actual progress. See the [schema
contract](https://github.com/chyezh/milvus/blob/ce23b02e1c0facfeede0073b22365e1607756d48/docs/design-docs/design_docs/qviews/data_view_schema.md).
- Readiness and protocols: count expected replicas and shards, support
resource-group-scoped loading and refresh progress with
configuration/schema/data-version fences, and provide node clients and
simplified loading protocols. Remove compatibility paths for unreleased
QueryView formats while retaining existing QueryCoord metadata recovery.
- Integration boundary: keep production runtime activation, Load/Release
routing, W/A producers, DDL/schema-materialization wiring, and missing
dependency implementations in the follow-up integration PR. Provide the
required LoadInfoCatalog and PrepareDataViewSchema interfaces here; the
follow-up also removes direct RPC load-config writes and retains
serialized WAL ACK retries and partition-readiness semantics.

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Signed-off-by: chyezh <chyezh@outlook.com>
Signed-off-by: sijie-ni-0214 <sijie.ni@zilliz.com>
Co-authored-by: sijie-ni-0214 <sijie.ni@zilliz.com>
2026-10-27 01:41:55 +08:00
..
2022-05-10 20:05:53 +08:00
2024-05-22 13:21:39 +08:00
2021-11-16 15:41:11 +08:00