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Code Issues Releases Wiki Activity

Reintroduce appending sorted entries when possible

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This commit is contained in:
Clément Renault 2022-02-22 17:28:57 +01:00 committed by Kerollmops
parent 382be56d36
commit 04b1bbf932
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GPG Key ID: 92ADA4E935E71FA4
1 changed files with 26 additions and 28 deletions
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24
milli/src/update/index_documents/helpers/grenad_helpers.rs
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@ -3,7 +3,7 @@ use std::fs::File;
use std::io::{self, Seek, SeekFrom};
use std::time::Instant;
use grenad::{CompressionType, MergerIter, Reader, Sorter};
use grenad::{CompressionType, Reader, Sorter};
use heed::types::ByteSlice;
use log::debug;
@ -209,18 +209,14 @@ pub fn sorter_into_lmdb_database(
debug!("Writing MTBL sorter...");
let before = Instant::now();
merger_iter_into_lmdb_database(wtxn, database, sorter.into_stream_merger_iter()?, merge)?;
debug!("MTBL sorter writen in {:.02?}!", before.elapsed());
Ok(())
}
fn merger_iter_into_lmdb_database<R: io::Read + io::Seek>(
wtxn: &mut heed::RwTxn,
database: heed::PolyDatabase,
mut merger_iter: MergerIter<R, MergeFn>,
merge: MergeFn,
) -> Result<()> {
let mut merger_iter = sorter.into_stream_merger_iter()?;
if database.is_empty(wtxn)? {
let mut out_iter = database.iter_mut::<_, ByteSlice, ByteSlice>(wtxn)?;
while let Some((k, v)) = merger_iter.next()? {
// safety: we don't keep references from inside the LMDB database.
unsafe { out_iter.append(k, v)? };
}
} else {
while let Some((k, v)) = merger_iter.next()? {
let mut iter = database.prefix_iter_mut::<_, ByteSlice, ByteSlice>(wtxn, k)?;
match iter.next().transpose()? {
@ -239,6 +235,8 @@ fn merger_iter_into_lmdb_database<R: io::Read + io::Seek>(
}
}
}
}
debug!("MTBL sorter writen in {:.02?}!", before.elapsed());
Ok(())
}