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The Keys and AttributeDefinitions lists in the undefined-index-key sentence differ from the service #554
Description
Summary
The Some index key attributes are not defined in AttributeDefinitions. Keys: [..], AttributeDefinitions: [..] sentence renders its two lists differently from the service, on both CreateTable and UpdateTable.
Measured 2026-10-25 (us-east-1), index with keys g HASH and r RANGE unless stated:
| Request | Service | ExtendDB main 744ea29 |
|---|---|---|
definitions [pk, g] (r missing) |
Keys: [r, g], AttributeDefinitions: [pk, g] |
Keys: [r], AttributeDefinitions: [pk, g] |
definitions [pk, r] (g missing) |
Keys: [r, g], AttributeDefinitions: [r, pk] |
Keys: [g], AttributeDefinitions: [pk, r] |
definitions [pk] (both missing) |
Invalid KeySchema: Some index key attribute have no definition |
Keys: [g], AttributeDefinitions: [pk] |
keys a HASH, b RANGE, definitions [pk, a] |
Keys: [a, b], AttributeDefinitions: [a, pk] |
Keys: [b], AttributeDefinitions: [pk, a] |
definitions [zz, pk, aa], key b missing |
Keys: [b], AttributeDefinitions: [zz, aa, pk] |
Keys: [b], AttributeDefinitions: [zz, pk, aa] |
Three differences: the service's Keys list carries every key of the index, not the missing ones; two or more missing keys with a non-empty member answer the Invalid KeySchema sentence (the one #548 encodes for the empty member); and the service renders both lists in an order that is neither the request's nor alphabetical ([zz, pk, aa] renders [zz, aa, pk], [pk, n, b] renders [n, b, pk]), consistent across repeats, so it is not reproducible from the request.
Fix shape
Render every index key in Keys; answer two or more missing keys with Invalid KeySchema: Some index key attribute have no definition; keep request order for the lists and record the order difference in the differences document. Both paths: crates/core/src/validation/mod.rs (CreateTable) and crates/engine/src/update_table.rs (UpdateTable). The wire rows in #548 use one-key shapes, where the lists have one element, and pass on the service.
Found while reviewing #520.
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