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Code Issues Releases Wiki Activity

Truncate the the normalized long facets used in search for facet value

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This commit is contained in:
ManyTheFish 2023-08-08 12:00:51 +02:00
parent e338ceb97f
commit 35758db9ec
3 changed files with 13 additions and 4 deletions
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2
milli/src/lib.rs
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@ -97,7 +97,7 @@ const MAX_LMDB_KEY_LENGTH: usize = 500;
///
/// This number is determined by the keys of the different facet databases
/// and adding a margin of safety.
pub const MAX_FACET_VALUE_LENGTH: usize = MAX_LMDB_KEY_LENGTH - 20;
pub const MAX_FACET_VALUE_LENGTH: usize = MAX_LMDB_KEY_LENGTH - 32;
/// The maximum length a word can be
pub const MAX_WORD_LENGTH: usize = MAX_LMDB_KEY_LENGTH / 2;

13
milli/src/update/facet/mod.rs
View File

@ -94,7 +94,7 @@ use crate::heed_codec::facet::{FacetGroupKey, FacetGroupKeyCodec, FacetGroupValu
use crate::heed_codec::ByteSliceRefCodec;
use crate::update::index_documents::create_sorter;
use crate::update::merge_btreeset_string;
use crate::{BEU16StrCodec, Index, Result, BEU16};
use crate::{BEU16StrCodec, Index, Result, BEU16, MAX_FACET_VALUE_LENGTH};
pub mod bulk;
pub mod delete;
@ -191,7 +191,16 @@ impl<'i> FacetsUpdate<'i> {
for result in database.iter(wtxn)? {
let (facet_group_key, ()) = result?;
if let FacetGroupKey { field_id, level: 0, left_bound } = facet_group_key {
let normalized_facet = left_bound.normalize(&options);
let mut normalized_facet = left_bound.normalize(&options);
let normalized_truncated_facet: String;
if normalized_facet.len() > MAX_FACET_VALUE_LENGTH {
normalized_truncated_facet = normalized_facet
.char_indices()
.take_while(|(idx, _)| *idx < MAX_FACET_VALUE_LENGTH)
.map(|(_, c)| c)
.collect();
normalized_facet = normalized_truncated_facet.into();
}
let set = BTreeSet::from_iter(std::iter::once(left_bound));
let key = (field_id, normalized_facet.as_ref());
let key = BEU16StrCodec::bytes_encode(&key).ok_or(heed::Error::Encoding)?;

2
milli/src/update/index_documents/extract/extract_facet_string_docids.rs
View File

@ -44,7 +44,7 @@ pub fn extract_facet_string_docids<R: io::Read + io::Seek>(
if normalised_value.len() > MAX_FACET_VALUE_LENGTH {
normalised_truncated_value = normalised_value
.char_indices()
.take_while(|(idx, _)| idx + 4 < MAX_FACET_VALUE_LENGTH)
.take_while(|(idx, _)| *idx < MAX_FACET_VALUE_LENGTH)
.map(|(_, c)| c)
.collect();
normalised_value = normalised_truncated_value.as_str();