CrownChu opened a new pull request, #9128:
URL: https://github.com/apache/paimon/pull/9128
## What is the purpose of the change?
`DataEvolutionVectorScan` reads search-mode settings directly from table
options, so query-level overrides supplied by the query builder are ignored.
This prevents callers from overriding vector or scalar index search behavior
for an individual query.
## Brief change log
- Build effective options by applying table options first and query options
second.
- Use the effective options for both vector-index and scalar-index search
modes.
- Add regression coverage proving that a query-level scalar full-search
override restores fallback rows when the table default is fast mode.
## Verifying this change
```bash
mvn -pl paimon-core -am -DskipITs -Dfast \
-Dtest=VectorSearchBuilderTest#testFastScalarModePartialPreFilterOnlyUsesIndexedRows
\
-Dsurefire.failIfNoSpecifiedTests=false test
```
Result: the focused regression test passed. Spotless and Checkstyle also
passed.
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