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GH-390: Refresh vector lookup when synchronizing the schema - #1389
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hutiefang76
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laurentgo,
lidavidm and
wgtmac
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October 24, 2026 08:37
Promoted child types change Field equality, leaving the lookup cache keyed by the old schema. Rebuild the cache when the schema changes so Field-based lookups and JSON serialization resolve the current vectors. Generated-by: Codex and DeepSeek
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What's Changed
After a child type is promoted,
syncSchema()updates the schema but leaves the vector lookup keyed by the oldFieldvalues. Looking up a vector using the new schema returns null, andJsonFileWriterthen throws a NullPointerException. Refresh the Field-keyed lookup in the schema-change branch, preserving vector identity and ordering.Add regressions using two rows of promoted nested-list data: direct lookup verifies the new Field, removal of the stale key, unchanged values and row count, and a second synchronization that makes no change. A real JSON write/read round trip verifies the schema and both nested row values. The unchanged implementation fails the lookup assertion and throws in the writer.
Validation on JDK 21:
mvn -B -ntp -Dmaven.gitcommitid.nativegit=true -pl vector -am verifypassed, including dependency modules.TestVectorSchemaRootcases passed in each execution without skips.Closes #390.
Maintainer note: the CI workflows are
action_required, and my account cannot add repository labels. Please addbug-fixand approve the runs when appropriate. Remote CI and maintainer review remain pending.AI-generated PR description. Investigation, implementation and automated review assisted by Codex and DeepSeek.