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avoid unnecessary disk bucket data file allocation (#31659)

This commit is contained in:
Jeff Washington (jwash) 2023-05-16 09:10:46 -05:00 committed by GitHub
parent 392e33d893
commit bace5679a1
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1 changed files with 4 additions and 3 deletions
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7
bucket_map/src/bucket.rs
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@ -402,8 +402,10 @@ impl<'b, T: Clone + Copy + 'static> Bucket<T> {
data_len: usize,
ref_count: RefCount,
) -> Result<(), BucketMapError> {
let num_slots = data_len as u64;
let best_fit_bucket = MultipleSlots::data_bucket_from_num_slots(data_len as u64);
if self.data.get(best_fit_bucket as usize).is_none() {
let requires_data_bucket = num_slots > 1 || ref_count != 1;
if requires_data_bucket && self.data.get(best_fit_bucket as usize).is_none() {
// fail early if the data bucket we need doesn't exist - we don't want the index entry partially allocated
return Err(BucketMapError::DataNoSpace((best_fit_bucket, 0)));
}
@ -420,8 +422,7 @@ impl<'b, T: Clone + Copy + 'static> Bucket<T> {
elem_allocate.init(&mut self.index, key);
elem_allocate
};
let num_slots = data_len as u64;
if num_slots <= 1 && ref_count == 1 {
if !requires_data_bucket {
// new data stored should be stored in IndexEntry and NOT in data file
// new data len is 0 or 1
if let OccupiedEnum::MultipleSlots(multiple_slots) =