lucene
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apache
Apache Lucene open-source search software
Saving some field accesses results in small but visible savings: ``` TaskQPS baseline StdDevQPS my_modified_version StdDev Pct diff p-value LowTerm 617.46 (8.2%) 615.47 (7.4%) -0.3% ( -14% - 16%) 0.855...
### Description Lucene already does OK in filtered kNN search, but it can be better. An interesting paper in this area: https://arxiv.org/abs/2403.04871 Weaviate has done an implementation of such paper:...
I have an index consisting of 44 million documents spread across 60 segments. When I run a query against this index with a huge number of results requested (e.g. 5...
### Description Vector search currently loads vectors from disk by issuing a `seek()` followed by a `readFloats()`. We should instead: - Add an absolute `readFloats()` method to `RandomAccessInput` - Refactor...
Resolves #13760 ### Description This is using a similar approach to how Solr used to compute multiple percentiles at a single time. Basically utilize the quick select method, but instead...
### FVH BaseFragmentsBuilder does not properly support colored pre/post tags Details and discussion about the problem can be found in this issue: [FVH BaseFragmentsBuilder does not properly support colored pre/post...
### Description Given the `BaseFragmentsBuilder` description: ```java ... /** * Base FragmentsBuilder implementation that supports colored pre/post tags and multivalued fields. * * Uses {@link BoundaryScanner} to determine fragments. */...
## Description For past 1 month we have been testing difference in performance for a files getting opened with IOContext.RANDOM vs IOContext.READ specially during merges with Lucene version 9.11.1 and...
### Description Following up on #13686.
