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Print oldest celldb snapshot to stats (#1078)

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Co-authored-by: SpyCheese <mikle98@yandex.ru>
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EmelyanenkoK 2024-07-26 22:11:58 +03:00 • committed by GitHub
parent 679e6be294
commit b3828f8eb2
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6 changed files with 83 additions and 3 deletions
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18
tddb/td/db/RocksDb.h
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@ -26,6 +26,12 @@
#include "td/utils/Status.h"
#include "td/utils/optional.h"
#include "td/utils/Time.h"
#include <map>
#include <mutex>
#include <set>
namespace rocksdb {
class Cache;
class OptimisticTransactionDB;
@ -36,10 +42,22 @@ class Statistics;
} // namespace rocksdb
namespace td {
struct RocksDbSnapshotStatistics {
void begin_snapshot(const rocksdb::Snapshot *snapshot);
void end_snapshot(const rocksdb::Snapshot *snapshot);
td::Timestamp oldest_snapshot_timestamp() const;
std::string to_string() const;
private:
mutable std::mutex mutex_;
std::map<std::uintptr_t, double> id_to_ts_;
std::set<std::pair<double, std::uintptr_t>> by_ts_;
};
struct RocksDbOptions {
std::shared_ptr<rocksdb::Statistics> statistics = nullptr;
std::shared_ptr<rocksdb::Cache> block_cache; // Default - one 1G cache for all RocksDb
std::shared_ptr<RocksDbSnapshotStatistics> snapshot_statistics = nullptr;
bool use_direct_reads = false;
};