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Spade AandGitHub
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issue: https://github.com/milvus-io/milvus/issues/50461 ref: https://github.com/milvus-io/milvus/issues/42148 Issue: nullable VectorArray chunks store non-null rows in a compact physical layout, so logical row indexes can diverge from physical row indexes when missing/null rows exist. Some access paths use logical-to-physical translation when reading the vector-array data, but the offsets returned by VectorArrayOffsets() were still indexed by the compact physical layout. Sealed segment vector search used logical row indexes to read those offsets directly, without applying the same logical-to-physical translation. This could make it read the wrong row span or read past the valid offsets range, resulting in empty search results or std::bad_alloc. Fix: build VectorArrayChunk offsets by logical row count instead of physical row count. The offsets array now has row_nums + 1 entries and can be indexed directly by logical row id. Null rows and empty rows both have a zero-length span, while the existing Chunk valid bitmap preserves the distinction between null and non-null empty rows. Signed-off-by: SpadeA <tangchenjie1210@gmail.com>