9 lines
449 B
Markdown
9 lines
449 B
Markdown
# ADR 0019 — Shadow embedding migrations never mutate production aliases
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Status: accepted
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Embedding changes always build a distinct collection with explicit `embedding_space_id`. Progress
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is checkpointed after complete Qdrant batches and validated from canonical chunk fingerprints.
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M6 exposes cancel/resume/evaluate but no cutover. This prevents dimension equality, partial writes
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or evaluation success from silently becoming production state.
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