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issue: #44358 Implement complete snapshot management system including creation, deletion, listing, description, and restoration capabilities across all system components. Key features: - Create snapshots for entire collections - Drop snapshots by name with proper cleanup - List snapshots with collection filtering - Describe snapshot details and metadata Components added/modified: - Client SDK with full snapshot API support and options - DataCoord snapshot service with metadata management - Proxy layer with task-based snapshot operations - Protocol buffer definitions for snapshot RPCs - Comprehensive unit tests with mockey framework - Integration tests for end-to-end validation Technical implementation: - Snapshot metadata storage in etcd with proper indexing - File-based snapshot data persistence in object storage - Garbage collection integration for snapshot cleanup - Error handling and validation across all operations - Thread-safe operations with proper locking mechanisms <!-- This is an auto-generated comment: release notes by coderabbit.ai --> - Core invariant/assumption: snapshots are immutable point‑in‑time captures identified by (collection, snapshot name/ID); etcd snapshot metadata is authoritative for lifecycle (PENDING → COMMITTED → DELETING) and per‑segment manifests live in object storage (Avro / StorageV2). GC and restore logic must see snapshotRefIndex loaded (snapshotMeta.IsRefIndexLoaded) before reclaiming or relying on segment/index files. - New capability added: full end‑to‑end snapshot subsystem — client SDK APIs (Create/Drop/List/Describe/Restore + restore job queries), DataCoord SnapshotWriter/Reader (Avro + StorageV2 manifests), snapshotMeta in meta, SnapshotManager orchestration (create/drop/describe/list/restore), copy‑segment restore tasks/inspector/checker, proxy & RPC surface, GC integration, and docs/tests — enabling point‑in‑time collection snapshots persisted to object storage and restorations orchestrated across components. - Logic removed/simplified and why: duplicated recursive compaction/delta‑log traversal and ad‑hoc lookup code were consolidated behind two focused APIs/owners (Handler.GetDeltaLogFromCompactTo for delta traversal and SnapshotManager/SnapshotReader for snapshot I/O). MixCoord/coordinator broker paths were converted to thin RPC proxies. This eliminates multiple implementations of the same traversal/lookup, reducing divergence and simplifying responsibility boundaries. - Why this does NOT introduce data loss or regressions: snapshot create/drop use explicit two‑phase semantics (PENDING → COMMIT/DELETING) with SnapshotWriter writing manifests and metadata before commit; GC uses snapshotRefIndex guards and IsRefIndexLoaded/GetSnapshotBySegment/GetSnapshotByIndex checks to avoid removing referenced files; restore flow pre‑allocates job IDs, validates resources (partitions/indexes), performs rollback on failure (rollbackRestoreSnapshot), and converts/updates segment/index metadata only after successful copy tasks. Extensive unit and integration tests exercise pending/deleting/GC/restore/error paths to ensure idempotence and protection against premature deletion. <!-- end of auto-generated comment: release notes by coderabbit.ai --> --------- Signed-off-by: Wei Liu <wei.liu@zilliz.com>
Compile and install milvus cluster
Environment
OS: Ubuntu 20.04
go：1.21
cmake: >=3.18
gcc： 7.5
Install dependencies
Install compile dependencies
$ sudo apt install -y g++ gcc make libssl-dev zlib1g-dev libboost-regex-dev \
libboost-program-options-dev libboost-system-dev libboost-filesystem-dev \
libboost-serialization-dev python3-dev libboost-python-dev libcurl4-openssl-dev gfortran libtbb-dev
$ export GO111MODULE=on
$ go get github.com/golang/protobuf/protoc-gen-go@v1.3.2
Install OpenBlas library
install using apt
sudo apt install -y libopenblas-dev
or build from source code
$ wget https://github.com/xianyi/OpenBLAS/archive/v0.3.9.tar.gz && \
$ tar zxvf v0.3.9.tar.gz && cd OpenBLAS-0.3.9 && \
$ make TARGET=CORE2 DYNAMIC_ARCH=1 DYNAMIC_OLDER=1 USE_THREAD=0 USE_OPENMP=0 FC=gfortran CC=gcc COMMON_OPT="-O3 -g -fPIC" FCOMMON_OPT="-O3 -g -fPIC -frecursive" NMAX="NUM_THREADS=128" LIBPREFIX="libopenblas" INTERFACE64=0 NO_STATIC=1 && \
$ make PREFIX=/usr install
Compile
Generate the go files from proto file
$ make check-proto-product
Check code specifications
$ make verifiers
Compile milvus
$ make milvus
Install docker-compose
refer: https://docs.docker.com/compose/install/
$ sudo curl -L "https://github.com/docker/compose/releases/download/1.27.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
$ sudo chmod +x /usr/local/bin/docker-compose
$ sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
$ docker-compose --version
$ docker compose --version
Start service
Start third-party service:
$ cd [milvus project path]/deployments/docker/cluster
$ docker-compose up -d
$ docker compose up -d
Start milvus cluster:
$ cd [milvus project path]
$ ./scripts/start_cluster.sh
Run unittest
Run all unittest including go and cpp cases:
$ make unittest
You also can run go unittest only:
$ make test-go
Run cpp unittest only:
$ make test-cpp
Run code coverage
Run code coverage including go and cpp:
$ make codecov
You also can run go code coverage only:
$ make codecov-go
Run cpp code coverage only:
$ make codecov-cpp