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branch-3.1: [enhancement](filecache) parallel clear cache between multiple cache instance #55259 #55437

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Merged
morrySnow merged 1 commit into from
Sep 4, 2025
Merged

branch-3.1: [enhancement](filecache) parallel clear cache between multiple cache instance #55259 #55437

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13 changes: 11 additions & 2 deletions be/src/io/cache/block_file_cache_factory.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@
#endif

#include <algorithm>
#include <execution>
#include <ostream>
#include <utility>

Expand Down Expand Up @@ -156,9 +157,17 @@ FileCacheFactory::get_query_context_holders(const TUniqueId& query_id) {
}

std::string FileCacheFactory::clear_file_caches(bool sync) {
std::vector<std::string> results(_caches.size());

std::for_each(std::execution::par, _caches.begin(), _caches.end(), [&](const auto& cache) {
size_t index = &cache - &_caches[0];
results[index] =
sync ? cache->clear_file_cache_directly() : cache->clear_file_cache_async();
});

std::stringstream ss;
for (const auto& cache : _caches) {
ss << (sync ? cache->clear_file_cache_directly() : cache->clear_file_cache_async()) << "\n";
for (const auto& result : results) {
ss << result << "\n";
}
return ss.str();
}
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