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zhuwenxing
734acf93f0
## Summary - Add Python client import coverage for nullable values, defaults, row identity, scalar boundaries, vector encodings, dynamic fields, BM25, geometry, and timestamps across supported file formats. - Cover multi-file progress, empty-file commit/abort, malformed input, and preservation of existing data after failed imports. - Correct legacy import fixtures and assertions, including JSON field NULLs and the distinction between non-finite and null array elements. - Verify packed Storage V2 binlog restore after adding nullable dense/sparse vectors. Native Storage V3 uses the snapshot export/restore path instead. - Strengthen the REST v2 L0 snapshot lifecycle test with per-row and schema comparisons, NULL filtering, vector search, restore after dropping the source snapshot and collection, reload checks, and exported-object cleanup. ## Validation Tested against Milvus commit `1ae8642b8b1` using `milvus-dev-cli` E2E runners. - REST v2 snapshot lifecycle: passed on Storage V2 (76.93s) and Storage V3 (77.97s). - Packed Storage V2 binlog restore: 2 passed (dense and sparse nullable vectors). - Nullable timestamp defaults: 3 passed (JSON, CSV, and Parquet). - Targeted import and legacy bulk-insert runs covered nullable values, defaults, partition keys, malformed files, vector encodings, scalar boundaries, dynamic fields, BM25, and invalid array elements. - Python import testcase collection after renaming: 60 cases collected. - Changed snapshot testcase: Ruff formatting/lint, Python compilation, and pytest collection passed. Renamed import testcase: Ruff lint, Python compilation, and pytest collection passed. Validation used targeted runs during development; the complete final branch test selection has not been rerun as one suite. Snapshot validation used serial REST runs. The default CI storage configuration is not changed by this PR. ## Scope Test-only changes. No production behavior changes. --------- Signed-off-by: zhuwenxing <[email protected]>