DiskIdx: reuse disk bucket file if possible (#33379)
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parent
1840fd7ab3
commit
e92d90b674
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@ -19,7 +19,9 @@ use {
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solana_sdk::pubkey::Pubkey,
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std::{
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collections::hash_map::DefaultHasher,
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fs,
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hash::{Hash, Hasher},
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num::NonZeroU64,
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ops::RangeBounds,
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path::PathBuf,
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sync::{
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@ -119,18 +121,44 @@ impl<'b, T: Clone + Copy + PartialEq + std::fmt::Debug + 'static> Bucket<T> {
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max_search: MaxSearch,
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stats: Arc<BucketMapStats>,
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count: Arc<AtomicU64>,
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restartable_bucket: RestartableBucket,
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mut restartable_bucket: RestartableBucket,
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) -> Self {
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let (index, _file_name) = BucketStorage::new(
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Arc::clone(&drives),
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1,
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std::mem::size_of::<IndexEntry<T>>() as u64,
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max_search,
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Arc::clone(&stats.index),
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count,
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);
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stats.index.resize_grow(0, index.capacity_bytes());
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let random = thread_rng().gen();
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let reuse_path = std::mem::take(&mut restartable_bucket.path);
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let elem_size = NonZeroU64::new(std::mem::size_of::<IndexEntry<T>>() as u64).unwrap();
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let (index, random) = reuse_path
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.and_then(|path| {
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// try to re-use the file this bucket was using last time we were running
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restartable_bucket.get().and_then(|(_file_name, random)| {
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let result = BucketStorage::load_on_restart(
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path.clone(),
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elem_size,
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max_search,
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Arc::clone(&stats.index),
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count.clone(),
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)
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.map(|index| (index, random));
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if result.is_none() {
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// we couldn't re-use it, so delete it
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_ = fs::remove_file(path);
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}
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result
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})
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})
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.unwrap_or_else(|| {
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// no file to re-use, so create a new file
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let (index, file_name) = BucketStorage::new(
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Arc::clone(&drives),
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1,
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elem_size.into(),
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max_search,
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Arc::clone(&stats.index),
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count,
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);
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stats.index.resize_grow(0, index.capacity_bytes());
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let random = thread_rng().gen();
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restartable_bucket.set_file(file_name, random);
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(index, random)
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});
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Self {
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random,
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