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Bulk facet remove deletes keys from DB when value empty

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Louis Dureuil 2023-10-31 09:53:55 +01:00
parent 4e91707a06
commit dad78cbf8d
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1 changed files with 9 additions and 3 deletions
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12
milli/src/update/facet/bulk.rs
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@ -3,7 +3,7 @@ use std::io::BufReader;
use grenad::CompressionType;
use heed::types::ByteSlice;
use heed::{BytesEncode, Error, RoTxn, RwTxn};
use heed::{BytesDecode, BytesEncode, Error, RoTxn, RwTxn};
use roaring::RoaringBitmap;
use super::{FACET_GROUP_SIZE, FACET_MIN_LEVEL_SIZE};
@ -14,7 +14,7 @@ use crate::heed_codec::facet::{
use crate::heed_codec::ByteSliceRefCodec;
use crate::update::del_add::{DelAdd, KvReaderDelAdd};
use crate::update::index_documents::{create_writer, valid_lmdb_key, writer_into_reader};
use crate::{CboRoaringBitmapCodec, FieldId, Index, Result};
use crate::{CboRoaringBitmapCodec, CboRoaringBitmapLenCodec, FieldId, Index, Result};
/// Algorithm to insert elememts into the `facet_id_(string/f64)_docids` databases
/// by rebuilding the database "from scratch".
@ -181,7 +181,13 @@ impl<R: std::io::Read + std::io::Seek> FacetsUpdateBulkInner<R> {
buffer.extend_from_slice(value);
}
};
database.put(wtxn, key, &buffer)?;
let new_bitmap = &buffer[1..];
// if the new bitmap is empty, let's remove it
if CboRoaringBitmapLenCodec::bytes_decode(new_bitmap).unwrap_or_default() == 0 {
database.delete(wtxn, key)?;
} else {
database.put(wtxn, key, &buffer)?;
}
}
}
Ok(())