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Signed-off-by: Kunal Kotwani <[email protected]>
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| ## Version 2.19.0.0 Release Notes | ||
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| Compatible with OpenSearch 2.19.0 | ||
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| ### Features | ||
| - Add Support for Multi Values in innerHit for Nested k-NN Fields in Lucene and FAISS [#2283](https://github.com/opensearch-project/k-NN/pull/2283) | ||
| - Add binary index support for Lucene engine. [#2292](https://github.com/opensearch-project/k-NN/pull/2292) | ||
| - Add expand_nested_docs Parameter support to NMSLIB engine [#2331](https://github.com/opensearch-project/k-NN/pull/2331) | ||
| - Add a new build mode, `FAISS_OPT_LEVEL=avx512_spr`, which enables the use of advanced AVX-512 instructions introduced with Intel[R] Sapphire Rapids [#2404](https://github.com/opensearch-project/k-NN/pull/2404) | ||
| - Add cosine similarity support for faiss engine [#2376](https://github.com/opensearch-project/k-NN/pull/2376) | ||
| - Add concurrency optimizations with native memory graph loading and force eviction [#2265](https://github.com/opensearch-project/k-NN/pull/2345) | ||
| - Add derived source feature for vector fields [#2449](https://github.com/opensearch-project/k-NN/pull/2449) | ||
| ### Enhancements | ||
| - Introduced a writing layer in native engines where relies on the writing interface to process IO. [#2241](https://github.com/opensearch-project/k-NN/pull/2241) | ||
| - Allow method parameter override for training based indices [#2290](https://github.com/opensearch-project/k-NN/pull/2290) | ||
| - Optimizes lucene query execution to prevent unnecessary rewrites [#2305](https://github.com/opensearch-project/k-NN/pull/2305) | ||
| - Added more detailed error messages for KNN model training [#2378](https://github.com/opensearch-project/k-NN/pull/2378) | ||
| - Add check to directly use ANN Search when filters match all docs. [#2320](https://github.com/opensearch-project/k-NN/pull/2320) | ||
| - Use one formula to calculate cosine similarity [#2357](https://github.com/opensearch-project/k-NN/pull/2357) | ||
| - Make the build work for M series MacOS without manual code changes and local JAVA_HOME config [#2397](https://github.com/opensearch-project/k-NN/pull/2397) | ||
| - Remove DocsWithFieldSet reference from NativeEngineFieldVectorsWriter [#2408](https://github.com/opensearch-project/k-NN/pull/2408) | ||
| - Remove skip building graph check for quantization use case [#2430](https://github.com/opensearch-project/k-NN/2430) | ||
| - Removing redundant type conversions for script scoring for hamming space with binary vectors [#2351](https://github.com/opensearch-project/k-NN/pull/2351) | ||
| - Update default to 0 to always build graph as default behavior [#2452](https://github.com/opensearch-project/k-NN/pull/2452) | ||
| - Enabled concurrent graph creation for Lucene engine with index thread qty settings[#2480](https://github.com/opensearch-project/k-NN/pull/2480) | ||
| ### Bug Fixes | ||
| * Fixing the bug when a segment has no vector field present for disk based vector search [#2282](https://github.com/opensearch-project/k-NN/pull/2282) | ||
| * Fixing the bug where search fails with "fields" parameter for an index with a knn_vector field [#2314](https://github.com/opensearch-project/k-NN/pull/2314) | ||
| * Fix for NPE while merging segments after all the vector fields docs are deleted [#2365](https://github.com/opensearch-project/k-NN/pull/2365) | ||
| * Allow validation for non knn index only after 2.17.0 [#2315](https://github.com/opensearch-project/k-NN/pull/2315) | ||
| * Fixing the bug to prevent updating the index.knn setting after index creation[#2348](https://github.com/opensearch-project/k-NN/pull/2348) | ||
| * Release query vector memory after execution [#2346](https://github.com/opensearch-project/k-NN/pull/2346) | ||
| * Fix shard level rescoring disabled setting flag [#2352](https://github.com/opensearch-project/k-NN/pull/2352) | ||
| * Fix filter rewrite logic which was resulting in getting inconsistent / incorrect results for cases where filter was getting rewritten for shards [#2359](https://github.com/opensearch-project/k-NN/pull/2359) | ||
| * Fixing it to retrieve space_type from index setting when both method and top level don't have the value. [#2374](https://github.com/opensearch-project/k-NN/pull/2374) | ||
| * Fixing the bug where setting rescore as false for on_disk knn_vector query is a no-op [#2399](https://github.com/opensearch-project/k-NN/pull/2399) | ||
| * Fixing the bug to prevent index.knn setting from being modified or removed on restore snapshot [#2445](https://github.com/opensearch-project/k-NN/pull/2445) | ||
| * Fix Faiss byte vector efficient filter bug [#2448](https://github.com/opensearch-project/k-NN/pull/2448) | ||
| * Fixing bug where mapping accepts both dimension and model-id [#2410](https://github.com/opensearch-project/k-NN/pull/2410) | ||
| * Add version check for full field name validation [#2477](https://github.com/opensearch-project/k-NN/pull/2477) | ||
| ### Infrastructure | ||
| * Updated C++ version in JNI from c++11 to c++17 [#2259](https://github.com/opensearch-project/k-NN/pull/2259) | ||
| * Upgrade bytebuddy and objenesis version to match OpenSearch core and, update github ci runner for macos [#2279](https://github.com/opensearch-project/k-NN/pull/2279) | ||
| ### Documentation | ||
| ### Maintenance | ||
| * Select index settings based on cluster version[2236](https://github.com/opensearch-project/k-NN/pull/2236) | ||
| * Added periodic cache maintenance for QuantizationStateCache and NativeMemoryCache [#2308](https://github.com/opensearch-project/k-NN/pull/2308) | ||
| * Added null checks for fieldInfo in ExactSearcher to avoid NPE while running exact search for segments with no vector field [#2278](https://github.com/opensearch-project/k-NN/pull/2278) | ||
| * Added Lucene BWC tests [#2313](https://github.com/opensearch-project/k-NN/pull/2313) | ||
| * Upgrade jsonpath from 2.8.0 to 2.9.0[2325](https://github.com/opensearch-project/k-NN/pull/2325) | ||
| * Bump Faiss commit from 1f42e81 to 0cbc2a8 to accelerate hamming distance calculation using _mm512_popcnt_epi64 intrinsic and also add avx512-fp16 instructions to boost performance [#2381](https://github.com/opensearch-project/k-NN/pull/2381) | ||
| * Deprecate nmslib engine [#2427](https://github.com/opensearch-project/k-NN/pull/2427) | ||
| * Add spotless mirror repo for fixing builds [#2453](https://github.com/opensearch-project/k-NN/pull/2453) |