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Faster intersection group by

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This commit is contained in:
Clément Renault 2020-01-09 16:16:42 +01:00
parent d6c9ba8f08
commit 4f7a7ea0bb
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GPG Key ID: 92ADA4E935E71FA4
1 changed files with 4 additions and 7 deletions
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11
meilisearch-core/src/bucket_sort.rs
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@ -15,7 +15,7 @@ use levenshtein_automata::DFA;
use log::debug;
use meilisearch_tokenizer::{is_cjk, split_query_string};
use meilisearch_types::DocIndex;
use sdset::{Set, SetBuf, SetOperation};
use sdset::{Set, SetBuf};
use slice_group_by::{GroupBy, GroupByMut};
use crate::automaton::NGRAMS;
@ -64,18 +64,15 @@ where
let operation = create_query_tree(reader, &context, query).unwrap();
println!("{:?}", operation);
let QueryResult { docids, queries } = traverse_query_tree(reader, &context, &operation).unwrap();
println!("found {} documents", docids.len());
println!("number of postings {:?}", queries.len());
let before = Instant::now();
for ((query, input), matches) in queries {
let op = sdset::duo::IntersectionByKey::new(&matches, &docids, |d| d.document_id, Clone::clone);
let buf: SetBuf<DocIndex> = op.into_set_buf();
if !buf.is_empty() {
let input = std::str::from_utf8(&input);
println!("({:?}, {:?}) gives {} matches", query, input, buf.len());
// TODO optimize the filter by skipping docids that have already been seen
for matches in matches.linear_group_by_key(|m| m.document_id).filter(|ms| docids.contains(&ms[0].document_id)) {
// ...
}
}