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fix(block_cache): skip prefetch if the block is already cached

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This commit is contained in:
Marcus Holland-Moritz 2024-11-14 11:14:55 +01:00
parent 48152b9412
commit 3504ce97ef
1 changed files with 3 additions and 3 deletions
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6
src/reader/internal/block_cache.cpp
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@ -385,10 +385,10 @@ class block_cache_ final : public block_cache::impl {
scope_exit do_prefetch{[&] {
if (auto next = seq_access_detector_->prefetch()) {
sequential_prefetches_.fetch_add(1, std::memory_order_relaxed);
{
std::lock_guard lock(mx_);
if (cache_.findWithoutPromotion(*next) == cache_.end()) {
sequential_prefetches_.fetch_add(1, std::memory_order_relaxed);
create_cached_block(*next, std::promise<block_range>{}, 0,
std::numeric_limits<size_t>::max());
}