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This patch adds vector index options allowing to enable quantization and oversampling. Specific quantization value will be used internally by vector store. In the current implementation, get_oversampling allows us to decide how many times more candidates to retrieve from vector store - final response is still trimmed to the given limit. It is a first step to allow rescoring - recalculation of similarity metric and re-ranking. Without rescoring oversampling will be also further optimized to happen internally in vector store. `test/vector_search/rescoring_test.cc` implements basic tests of added functionality. New options are documented in `docs/cql/secondary-indexes.rst`. Fixes https://scylladb.atlassian.net/browse/SCYLLADB-82 Ref https://scylladb.atlassian.net/browse/SCYLLADB-83 New feature - no backporting Closes scylladb/scylladb#27677 * github.com:scylladb/scylladb: vector_search: doc: Document new index options vector_search: test: Test oversampling vector_search: test: Add rescoring index options test vector_search: test: Extract Configure utility to shared header vector_index: introduce `quantization` and `oversampling` options
Scylla in-source tests.
For details on how to run the tests, see docs/dev/testing.md
Shared C++ utils, libraries are in lib/, for Python - pylib/
alternator - Python tests which connect to a single server and use the DynamoDB API unit, boost, raft - unit tests in C++ cqlpy - Python tests which connect to a single server and use CQL topology* - tests that set up clusters and add/remove nodes cql - approval tests that use CQL and pre-recorded output rest_api - tests for Scylla REST API Port 9000 scylla-gdb - tests for scylla-gdb.py helper script nodetool - tests for C++ implementation of nodetool
If you can use an existing folder, consider adding your test to it. New folders should be used for new large categories/subsystems, or when the test environment is significantly different from some existing suite, e.g. you plan to start scylladb with different configuration, and you intend to add many tests and would like them to reuse an existing Scylla cluster (clusters can be reused for tests within the same folder).
To add a new folder, create a new directory, and then
copy & edit its suite.ini.