* Optimization when posting list are saturated.
If a posting list doc freq is the segment reader's
max_doc, and if scoring does not matter, we can replace it
by a AllScorer.
In turn, in a boolean query, we can dismiss all scorers and
empty scorers, to accelerate the request.
* Added range query optimization
* CR comment
* CR comments
* CR comment
---------
Co-authored-by: Paul Masurel <paul.masurel@datadoghq.com>
* reduce number of allocations
Explanation makes up around 50% of all allocations (numbers not perf).
It's created during serialization but not called.
- Make Explanation optional in BM25
- Avoid allocations when using Explanation
* use Cow
Applied this command to the code, making it a bit shorter and slightly
more readable.
```
cargo +nightly clippy --all-features --benches --tests --workspace --fix -- -A clippy::all -W clippy::uninlined_format_args
cargo +nightly fmt --all
```
Tantivy used to assume that all files could be somehow memory mapped. After this change, Directory return a `FileSlice` that can be reduced and eventually read into an `OwnedBytes` object. Long and blocking io operation are still required by they do not span over the entire file.
* Alternative take on boosted queries
* Fixing unit test
* Added boosting to the query grammar.
* Made BoostQuery public.
* Added support for boosting field in QueryParser
Closes#547
Paul MasurelandPaul Masurel
PSeitz-dd
PSeitz
Yuri Astrakhan
Alex Cole
Evance Souamoro
Paul Masurel