feat(compact): Support global LookupFileCache for compact lookup mode

include/paimon/defs.h

@@ -414,6 +414,13 @@ struct PAIMON_EXPORT Options {
     /// "lookup.cache.high-priority-pool-ratio" - The fraction of cache memory that is reserved for
     /// high-priority data like index, filter. Default value is 0.25.
     static const char LOOKUP_CACHE_HIGH_PRIO_POOL_RATIO[];
+    /// "lookup.cache-file-retention" - The cached files retention time for lookup.
+    /// After the file expires, if there is a need for access, it will be re-read from the DFS
+    /// to build an index on the local disk. Default value is 1 hour.
+    static const char LOOKUP_CACHE_FILE_RETENTION[];
+    /// "lookup.cache-max-disk-size" - Max disk size for lookup cache, you can use this option
+    /// to limit the use of local disks. Default value is unlimited (INT64_MAX).
+    static const char LOOKUP_CACHE_MAX_DISK_SIZE[];
 };
 
 static constexpr int64_t BATCH_WRITE_COMMIT_IDENTIFIER = std::numeric_limits<int64_t>::max();

src/paimon/CMakeLists.txt

@@ -243,6 +243,7 @@ set(PAIMON_CORE_SRCS
     core/mergetree/merge_tree_writer.cpp
     core/mergetree/write_buffer.cpp
     core/mergetree/levels.cpp
+    core/mergetree/lookup_file.cpp
     core/mergetree/lookup_levels.cpp
     core/mergetree/lookup/remote_lookup_file_manager.cpp
     core/migrate/file_meta_utils.cpp
@@ -478,6 +479,7 @@ if(PAIMON_BUILD_TESTS)
                     common/utils/uuid_test.cpp
                     common/utils/decimal_utils_test.cpp
                     common/utils/threadsafe_queue_test.cpp
+                    common/utils/generic_lru_cache_test.cpp
                     STATIC_LINK_LIBS
                     paimon_shared
                     test_utils_static

src/paimon/common/defs.cpp

@@ -117,5 +117,7 @@ const char Options::LOOKUP_COMPACT[] = "lookup-compact";
 const char Options::LOOKUP_COMPACT_MAX_INTERVAL[] = "lookup-compact.max-interval";
 const char Options::LOOKUP_CACHE_MAX_MEMORY_SIZE[] = "lookup.cache-max-memory-size";
 const char Options::LOOKUP_CACHE_HIGH_PRIO_POOL_RATIO[] = "lookup.cache.high-priority-pool-ratio";
+const char Options::LOOKUP_CACHE_FILE_RETENTION[] = "lookup.cache-file-retention";
+const char Options::LOOKUP_CACHE_MAX_DISK_SIZE[] = "lookup.cache-max-disk-size";
 
 }  // namespace paimon

src/paimon/common/io/cache/cache.h

@@ -39,8 +39,8 @@ class Cache {
         std::function<Result<std::shared_ptr<CacheValue>>(const std::shared_ptr<CacheKey>&)>
             supplier) = 0;
 
-    virtual void Put(const std::shared_ptr<CacheKey>& key,
-                     const std::shared_ptr<CacheValue>& value) = 0;
+    virtual Status Put(const std::shared_ptr<CacheKey>& key,
+                       const std::shared_ptr<CacheValue>& value) = 0;
 
     virtual void Invalidate(const std::shared_ptr<CacheKey>& key) = 0;
 
@@ -65,6 +65,13 @@ class CacheValue {
         }
     }
 
+    bool operator==(const CacheValue& other) const {
+        if (this == &other) {
+            return true;
+        }
+        return segment_ == other.segment_;
+    }
+
  private:
     MemorySegment segment_;
     CacheCallback callback_;

src/paimon/common/io/cache/lru_cache.cpp

@@ -18,128 +18,51 @@
 
 namespace paimon {
 
-LruCache::LruCache(int64_t max_weight) : max_weight_(max_weight), current_weight_(0) {}
+LruCache::LruCache(int64_t max_weight)
+    : inner_cache_(InnerCache::Options{
+          .max_weight = max_weight,
+          .expire_after_access_ms = -1,
+          .weigh_func = [](const std::shared_ptr<CacheKey>& /*key*/,
+                           const std::shared_ptr<CacheValue>& value) -> int64_t {
+              return value ? value->GetSegment().Size() : 0;
+          },
+          .removal_callback =
+              [](const std::shared_ptr<CacheKey>& key, const std::shared_ptr<CacheValue>& value,
+                 auto cause) {
+                  if (value) {
+                      value->OnEvict(key);
+                  }
+              }}) {}
 
 Result<std::shared_ptr<CacheValue>> LruCache::Get(
     const std::shared_ptr<CacheKey>& key,
     std::function<Result<std::shared_ptr<CacheValue>>(const std::shared_ptr<CacheKey>&)> supplier) {
-    {
-        std::unique_lock<std::shared_mutex> write_lock(mutex_);
-        auto cached = FindAndPromote(key);
-        if (cached) {
-            return cached.value();
-        }
-    }
-    // Cache miss: load via supplier (outside lock)
-    PAIMON_ASSIGN_OR_RAISE(std::shared_ptr<CacheValue> value, supplier(key));
-    if (GetWeight(value) > max_weight_) {
-        return value;
-    }
-
-    std::unique_lock<std::shared_mutex> write_lock(mutex_);
-    // Another thread may have inserted the key while we were loading
-    auto cached = FindAndPromote(key);
-    if (cached) {
-        return cached.value();
-    }
-
-    Insert(key, value);
-    EvictIfNeeded();
-    return value;
+    return inner_cache_.Get(key, std::move(supplier));
 }
 
-void LruCache::Put(const std::shared_ptr<CacheKey>& key, const std::shared_ptr<CacheValue>& value) {
-    if (GetWeight(value) > max_weight_) {
-        return;
-    }
-    std::unique_lock<std::shared_mutex> write_lock(mutex_);
-
-    auto it = lru_map_.find(key);
-    if (it != lru_map_.end()) {
-        // Update existing entry: adjust weight
-        current_weight_ -= GetWeight(it->second->second);
-        it->second->second = value;
-        current_weight_ += GetWeight(value);
-        lru_list_.splice(lru_list_.begin(), lru_list_, it->second);
-    } else {
-        Insert(key, value);
-    }
-
-    EvictIfNeeded();
+Status LruCache::Put(const std::shared_ptr<CacheKey>& key,
+                     const std::shared_ptr<CacheValue>& value) {
+    return inner_cache_.Put(key, value);
 }
 
 void LruCache::Invalidate(const std::shared_ptr<CacheKey>& key) {
-    std::unique_lock<std::shared_mutex> write_lock(mutex_);
-
-    auto it = lru_map_.find(key);
-    if (it != lru_map_.end()) {
-        RemoveEntry(it->second);
-    }
+    inner_cache_.Invalidate(key);
 }
 
 void LruCache::InvalidateAll() {
-    std::unique_lock<std::shared_mutex> write_lock(mutex_);
-
-    while (!lru_list_.empty()) {
-        RemoveEntry(std::prev(lru_list_.end()));
-    }
-    current_weight_ = 0;
+    inner_cache_.InvalidateAll();
 }
 
 size_t LruCache::Size() const {
-    std::shared_lock<std::shared_mutex> read_lock(mutex_);
-    return lru_map_.size();
+    return inner_cache_.Size();
 }
 
 int64_t LruCache::GetCurrentWeight() const {
-    std::shared_lock<std::shared_mutex> read_lock(mutex_);
-    return current_weight_;
+    return inner_cache_.GetCurrentWeight();
 }
 
 int64_t LruCache::GetMaxWeight() const {
-    return max_weight_;
-}
-
-std::optional<std::shared_ptr<CacheValue>> LruCache::FindAndPromote(
-    const std::shared_ptr<CacheKey>& key) {
-    auto it = lru_map_.find(key);
-    if (it != lru_map_.end()) {
-        lru_list_.splice(lru_list_.begin(), lru_list_, it->second);
-        return it->second->second;
-    }
-    return std::nullopt;
+    return inner_cache_.GetMaxWeight();
 }
 
-void LruCache::Insert(const std::shared_ptr<CacheKey>& key,
-                      const std::shared_ptr<CacheValue>& value) {
-    // Insert at front of LRU list
-    lru_list_.emplace_front(key, value);
-    lru_map_[key] = lru_list_.begin();
-    current_weight_ += GetWeight(value);
-}
-
-void LruCache::RemoveEntry(LruList::iterator list_it) {
-    auto entry_key = list_it->first;
-    auto entry_value = list_it->second;
-    current_weight_ -= GetWeight(entry_value);
-    lru_map_.erase(entry_key);
-    lru_list_.erase(list_it);
-
-    if (entry_value) {
-        entry_value->OnEvict(entry_key);
-    }
-}
-
-void LruCache::EvictIfNeeded() {
-    while (current_weight_ > max_weight_ && !lru_list_.empty()) {
-        RemoveEntry(std::prev(lru_list_.end()));
-    }
-}
-
-int64_t LruCache::GetWeight(const std::shared_ptr<CacheValue>& value) {
-    if (!value) {
-        return 0;
-    }
-    return value->GetSegment().Size();
-}
 }  // namespace paimon

src/paimon/common/io/cache/lru_cache.h

@@ -15,30 +15,25 @@
  */
 
 #pragma once
+
 #include <cstdint>
 #include <functional>
-#include <list>
 #include <memory>
-#include <mutex>
-#include <optional>
-#include <shared_mutex>
-#include <string>
-#include <unordered_map>
-#include <utility>
 
 #include "paimon/common/io/cache/cache.h"
 #include "paimon/common/io/cache/cache_key.h"
-#include "paimon/common/memory/memory_segment.h"
+#include "paimon/common/utils/generic_lru_cache.h"
 #include "paimon/result.h"
 
 namespace paimon {
-/// LRU Cache implementation with weight-based eviction.
-/// Uses std::list + unordered_map for O(1) get/put/evict:
-/// list stores entries in LRU order (most recently used at front)
-/// map stores key -> list::iterator for O(1) lookup
-/// capacity is measured in bytes (sum of MemorySegment sizes)
-/// when an entry is evicted, its CacheCallback is invoked to notify the upper layer
-/// @note Thread-safe: all public methods are protected by mutex (read-write lock).
+
+/// LRU Cache implementation with weight-based eviction for block cache.
+///
+/// Wraps GenericLruCache with CacheKey/CacheValue types. Capacity is measured
+/// in bytes (sum of MemorySegment sizes). When an entry is evicted, its
+/// CacheCallback is invoked to notify the upper layer.
+///
+/// @note Thread-safe: all public methods are protected by the underlying GenericLruCache lock.
 class LruCache : public Cache {
  public:
     explicit LruCache(int64_t max_weight);
@@ -48,8 +43,8 @@ class LruCache : public Cache {
         std::function<Result<std::shared_ptr<CacheValue>>(const std::shared_ptr<CacheKey>&)>
             supplier) override;
 
-    void Put(const std::shared_ptr<CacheKey>& key,
-             const std::shared_ptr<CacheValue>& value) override;
+    Status Put(const std::shared_ptr<CacheKey>& key,
+               const std::shared_ptr<CacheValue>& value) override;
 
     void Invalidate(const std::shared_ptr<CacheKey>& key) override;
 
@@ -62,24 +57,10 @@ class LruCache : public Cache {
     int64_t GetMaxWeight() const;
 
  private:
-    using LruEntry = std::pair<std::shared_ptr<CacheKey>, std::shared_ptr<CacheValue>>;
-    using LruList = std::list<LruEntry>;
-    using LruMap = std::unordered_map<std::shared_ptr<CacheKey>, LruList::iterator, CacheKeyHash,
-                                      CacheKeyEqual>;
-
-    std::optional<std::shared_ptr<CacheValue>> FindAndPromote(const std::shared_ptr<CacheKey>& key);
-    void Insert(const std::shared_ptr<CacheKey>& key, const std::shared_ptr<CacheValue>& value);
-    void RemoveEntry(LruList::iterator list_it);
-
-    void EvictIfNeeded();
-
-    static int64_t GetWeight(const std::shared_ptr<CacheValue>& value);
+    using InnerCache = GenericLruCache<std::shared_ptr<CacheKey>, std::shared_ptr<CacheValue>,
+                                       CacheKeyHash, CacheKeyEqual>;
 
-    int64_t max_weight_;
-    int64_t current_weight_;
-    LruList lru_list_;
-    LruMap lru_map_;
-    mutable std::shared_mutex mutex_;
+    InnerCache inner_cache_;
 };
 
 }  // namespace paimon