// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you under the Apache License, Version 2.0 (the

// "License"); you may not use this file except in compliance

// with the License.  You may obtain a copy of the License at

//

//   http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing,

// software distributed under the License is distributed on an

// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

// KIND, either express or implied.  See the License for the

// specific language governing permissions and limitations

// under the License.

#pragma once

#include <butil/macros.h>

#include <glog/logging.h>

#include <atomic>

#include <cstddef>

#include <cstdint>

#include <functional>

#include <memory>

#include <mutex>

#include <ostream>

#include <set>

#include <shared_mutex>

#include <string>

#include <string_view>

#include <utility>

#include <vector>

#include "common/config.h"

#include "common/status.h"

#include "olap/base_tablet.h"

#include "olap/binlog_config.h"

#include "olap/data_dir.h"

#include "olap/olap_common.h"

#include "olap/partial_update_info.h"

#include "olap/rowset/rowset.h"

#include "olap/rowset/rowset_meta.h"

#include "olap/rowset/rowset_reader.h"

#include "olap/rowset/segment_v2/segment.h"

#include "olap/version_graph.h"

#include "segment_loader.h"

#include "util/metrics.h"

#include "util/once.h"

#include "util/slice.h"

namespace bvar {

template <typename T>

class Adder;

}

namespace doris {

class Tablet;

class CumulativeCompactionPolicy;

class CompactionMixin;

class SingleReplicaCompaction;

class RowsetWriter;

struct RowsetWriterContext;

class TTabletInfo;

class TabletMetaPB;

class TupleDescriptor;

class CalcDeleteBitmapToken;

enum CompressKind : int;

class RowsetBinlogMetasPB;

namespace io {

class RemoteFileSystem;

} // namespace io

namespace vectorized {

class Block;

} // namespace vectorized

struct RowLocation;

enum KeysType : int;

enum SortType : int;

enum TabletStorageType { STORAGE_TYPE_LOCAL, STORAGE_TYPE_REMOTE, STORAGE_TYPE_REMOTE_AND_LOCAL };

extern bvar::Adder<uint64_t> unused_remote_rowset_num;

static inline constexpr auto TRACE_TABLET_LOCK_THRESHOLD = std::chrono::seconds(1);

struct WriteCooldownMetaExecutors {

    WriteCooldownMetaExecutors(size_t executor_nums = 5);

    void stop();

    void submit(TabletSharedPtr tablet);

    size_t _get_executor_pos(int64_t tablet_id) const {

        return std::hash<int64_t>()(tablet_id) % _executor_nums;

    };

    // Each executor is a mpsc to ensure uploads of the same tablet meta are not concurrent

    // FIXME(AlexYue): Use mpsc instead of `ThreadPool` with 1 thread

    // We use PriorityThreadPool since it would call status inside it's `shutdown` function.

    // Consider one situation where the StackTraceCache's singleton is detructed before

    // this WriteCooldownMetaExecutors's singleton, then invoking the status would also call

    // StackTraceCache which would then result in heap use after free like #23834

    std::vector<std::unique_ptr<PriorityThreadPool>> _executors;

    std::unordered_set<int64_t> _pending_tablets;

    std::mutex _latch;

    size_t _executor_nums;

};

class Tablet final : public BaseTablet {

public:

    Tablet(StorageEngine& engine, TabletMetaSharedPtr tablet_meta, DataDir* data_dir,

           const std::string_view& cumulative_compaction_type = "");

    DataDir* data_dir() const { return _data_dir; }

    int64_t replica_id() const { return _tablet_meta->replica_id(); }

    const std::string& tablet_path() const { return _tablet_path; }

    bool set_tablet_schema_into_rowset_meta();

    Status init();

    bool init_succeeded();

    bool is_used();

    void register_tablet_into_dir();

    void deregister_tablet_from_dir();

    void save_meta();

    // Used in clone task, to update local meta when finishing a clone job

    Status revise_tablet_meta(const std::vector<RowsetSharedPtr>& to_add,

                              const std::vector<RowsetSharedPtr>& to_delete,

                              bool is_incremental_clone);

    int64_t cumulative_layer_point() const;

    void set_cumulative_layer_point(int64_t new_point);

    inline int64_t cumulative_promotion_size() const;

    inline void set_cumulative_promotion_size(int64_t new_size);

    // Disk space occupied by tablet, contain local and remote.

    size_t tablet_footprint() override;

    // Local disk space occupied by tablet.

    size_t tablet_local_size();

    // Remote disk space occupied by tablet.

    size_t tablet_remote_size();

    size_t num_rows();

    int version_count() const;

    int stale_version_count() const;

    bool exceed_version_limit(int32_t limit) override;

    uint64_t segment_count() const;

    Version max_version() const;

    CumulativeCompactionPolicy* cumulative_compaction_policy();

    // properties encapsulated in TabletSchema

    SortType sort_type() const;

    size_t sort_col_num() const;

    size_t num_columns() const;

    size_t num_null_columns() const;

    size_t num_short_key_columns() const;

    size_t num_rows_per_row_block() const;

    CompressKind compress_kind() const;

    double bloom_filter_fpp() const;

    size_t next_unique_id() const;

    size_t row_size() const;

    int64_t avg_rs_meta_serialize_size() const;

    // operation in rowsets

    Status add_rowset(RowsetSharedPtr rowset);

    Status create_initial_rowset(const int64_t version);

    // MUST hold EXCLUSIVE `_meta_lock`.

    Status modify_rowsets(std::vector<RowsetSharedPtr>& to_add,

                          std::vector<RowsetSharedPtr>& to_delete, bool check_delete = false);

    bool rowset_exists_unlocked(const RowsetSharedPtr& rowset);

    Status add_inc_rowset(const RowsetSharedPtr& rowset);

    /// Delete stale rowset by timing. This delete policy uses now() minutes

    /// config::tablet_rowset_expired_stale_sweep_time_sec to compute the deadline of expired rowset

    /// to delete.  When rowset is deleted, it will be added to StorageEngine unused map and record

    /// need to delete flag.

    void delete_expired_stale_rowset();

    // Given spec_version, find a continuous version path and store it in version_path.

    // If quiet is true, then only "does this path exist" is returned.

    // If skip_missing_version is true, return ok even there are missing versions.

    Status capture_consistent_versions_unlocked(const Version& spec_version, Versions* version_path,

                                                bool skip_missing_version, bool quiet) const;

    // if quiet is true, no error log will be printed if there are missing versions

    Status check_version_integrity(const Version& version, bool quiet = false);

    bool check_version_exist(const Version& version) const;

    void acquire_version_and_rowsets(

            std::vector<std::pair<Version, RowsetSharedPtr>>* version_rowsets) const;

    Status capture_consistent_rowsets_unlocked(

            const Version& spec_version, std::vector<RowsetSharedPtr>* rowsets) const override;

    // If skip_missing_version is true, skip versions if they are missing.

    Status capture_rs_readers(const Version& spec_version, std::vector<RowSetSplits>* rs_splits,

                              bool skip_missing_version) override;

    // Find the missed versions until the spec_version.

    //

    // for example:

    //     [0-4][5-5][8-8][9-9][14-14]

    // if spec_version = 12, it will return [6, 6], [7, 7], [10, 10], [11, 11], [12, 12]

    Versions calc_missed_versions(int64_t spec_version, Versions existing_versions) const override;

    // meta lock

    std::shared_mutex& get_header_lock() { return _meta_lock; }

    std::mutex& get_rowset_update_lock() { return _rowset_update_lock; }

    std::mutex& get_push_lock() { return _ingest_lock; }

    std::mutex& get_base_compaction_lock() { return _base_compaction_lock; }

    std::mutex& get_cumulative_compaction_lock() { return _cumulative_compaction_lock; }

    std::shared_mutex& get_meta_store_lock() { return _meta_store_lock; }

    std::shared_timed_mutex& get_migration_lock() { return _migration_lock; }

    std::mutex& get_build_inverted_index_lock() { return _build_inverted_index_lock; }

    // operation for compaction

    bool can_do_compaction(size_t path_hash, CompactionType compaction_type);

    bool suitable_for_compaction(

            CompactionType compaction_type,

            std::shared_ptr<CumulativeCompactionPolicy> cumulative_compaction_policy);

    uint32_t calc_compaction_score();

    // This function to find max continuous version from the beginning.

    // For example: If there are 1, 2, 3, 5, 6, 7 versions belongs tablet, then 3 is target.

    // 3 will be saved in "version", and 7 will be saved in "max_version", if max_version != nullptr

    void max_continuous_version_from_beginning(Version* version, Version* max_version = nullptr);

    void set_bad(bool is_bad) { _is_bad = is_bad; }

    int64_t last_cumu_compaction_failure_time() { return _last_cumu_compaction_failure_millis; }

    void set_last_cumu_compaction_failure_time(int64_t millis) {

        _last_cumu_compaction_failure_millis = millis;

    }

    int64_t last_base_compaction_failure_time() { return _last_base_compaction_failure_millis; }

    void set_last_base_compaction_failure_time(int64_t millis) {

        _last_base_compaction_failure_millis = millis;

    }

    int64_t last_full_compaction_failure_time() { return _last_full_compaction_failure_millis; }

    void set_last_full_compaction_failure_time(int64_t millis) {

        _last_full_compaction_failure_millis = millis;

    }

    int64_t last_cumu_compaction_success_time() { return _last_cumu_compaction_success_millis; }

    void set_last_cumu_compaction_success_time(int64_t millis) {

        _last_cumu_compaction_success_millis = millis;

    }

    int64_t last_base_compaction_success_time() { return _last_base_compaction_success_millis; }

    void set_last_base_compaction_success_time(int64_t millis) {

        _last_base_compaction_success_millis = millis;

    }

    int64_t last_full_compaction_success_time() { return _last_full_compaction_success_millis; }

    void set_last_full_compaction_success_time(int64_t millis) {

        _last_full_compaction_success_millis = millis;

    }

    int64_t last_base_compaction_schedule_time() { return _last_base_compaction_schedule_millis; }

    void set_last_base_compaction_schedule_time(int64_t millis) {

        _last_base_compaction_schedule_millis = millis;

    }

    void set_last_single_compaction_failure_status(std::string status) {

        _last_single_compaction_failure_status = std::move(status);

    }

    void set_last_fetched_version(Version version) { _last_fetched_version = std::move(version); }

    void delete_all_files();

    void check_tablet_path_exists();

    std::vector<RowsetSharedPtr> pick_candidate_rowsets_to_cumulative_compaction();

    std::vector<RowsetSharedPtr> pick_candidate_rowsets_to_base_compaction();

    std::vector<RowsetSharedPtr> pick_candidate_rowsets_to_full_compaction();

    std::vector<RowsetSharedPtr> pick_candidate_rowsets_to_build_inverted_index(

            const std::set<int64_t>& alter_index_uids, bool is_drop_op);

    // used for single compaction to get the local versions

    // Single compaction does not require remote rowsets and cannot violate the cooldown semantics

    std::vector<Version> get_all_local_versions();

    void calculate_cumulative_point();

    // TODO(ygl):

    bool is_primary_replica() { return false; }

    // return true if the checkpoint is actually done

    bool do_tablet_meta_checkpoint();

    // Check whether the rowset is useful or not, unuseful rowset can be swept up then.

    // Rowset which is under tablet's management is useful, i.e. rowset is in

    // _rs_version_map, or _stale_rs_version_map.

    // Rowset whose version range is not covered by this tablet is also useful.

    bool rowset_meta_is_useful(RowsetMetaSharedPtr rowset_meta);

    void build_tablet_report_info(TTabletInfo* tablet_info,

                                  bool enable_consecutive_missing_check = false,

                                  bool enable_path_check = false);

    // return a json string to show the compaction status of this tablet

    void get_compaction_status(std::string* json_result);

    static Status prepare_compaction_and_calculate_permits(

            CompactionType compaction_type, const TabletSharedPtr& tablet,

            std::shared_ptr<CompactionMixin>& compaction, int64_t& permits);

    void execute_compaction(CompactionMixin& compaction);

    void execute_single_replica_compaction(SingleReplicaCompaction& compaction);

    void set_cumulative_compaction_policy(

            std::shared_ptr<CumulativeCompactionPolicy> cumulative_compaction_policy) {

        _cumulative_compaction_policy = cumulative_compaction_policy;

    }

    std::shared_ptr<CumulativeCompactionPolicy> get_cumulative_compaction_policy() {

        return _cumulative_compaction_policy;

    }

    void set_last_base_compaction_status(std::string status) {

        _last_base_compaction_status = std::move(status);

    }

    std::string get_last_base_compaction_status() { return _last_base_compaction_status; }

    std::tuple<int64_t, int64_t> get_visible_version_and_time() const;

    void set_visible_version(const std::shared_ptr<const VersionWithTime>& visible_version) {

        std::atomic_store_explicit(&_visible_version, visible_version, std::memory_order_relaxed);

    }

    bool should_fetch_from_peer();

    inline bool all_beta() const {

        std::shared_lock rdlock(_meta_lock);

        return _tablet_meta->all_beta();

    }

    const TabletSchemaSPtr& tablet_schema_unlocked() const { return _max_version_schema; }

    Result<std::unique_ptr<RowsetWriter>> create_rowset_writer(RowsetWriterContext& context,

                                                               bool vertical) override;

    Result<std::unique_ptr<RowsetWriter>> create_transient_rowset_writer(

            const Rowset& rowset, std::shared_ptr<PartialUpdateInfo> partial_update_info,

            int64_t txn_expiration = 0) override;

    Result<std::unique_ptr<RowsetWriter>> create_transient_rowset_writer(

            RowsetWriterContext& context, const RowsetId& rowset_id);

    Status create_rowset(const RowsetMetaSharedPtr& rowset_meta, RowsetSharedPtr* rowset);

    // MUST hold EXCLUSIVE `_meta_lock`

    void add_rowsets(const std::vector<RowsetSharedPtr>& to_add);

    // MUST hold EXCLUSIVE `_meta_lock`

    Status delete_rowsets(const std::vector<RowsetSharedPtr>& to_delete, bool move_to_stale);

    // MUST hold SHARED `_meta_lock`

    const auto& rowset_map() const { return _rs_version_map; }

    // MUST hold SHARED `_meta_lock`

    const auto& stale_rowset_map() const { return _stale_rs_version_map; }

    ////////////////////////////////////////////////////////////////////////////

    // begin cooldown functions

    ////////////////////////////////////////////////////////////////////////////

    int64_t storage_policy_id() const { return _tablet_meta->storage_policy_id(); }

    void set_storage_policy_id(int64_t id) { _tablet_meta->set_storage_policy_id(id); }

    int64_t last_failed_follow_cooldown_time() const { return _last_failed_follow_cooldown_time; }

    // Cooldown to remote fs.

    Status cooldown(RowsetSharedPtr rowset = nullptr);

    RowsetSharedPtr pick_cooldown_rowset();

    RowsetSharedPtr need_cooldown(int64_t* cooldown_timestamp, size_t* file_size);

    struct CooldownConf {

        int64_t term = -1;

        int64_t cooldown_replica_id = -1;

    };

    CooldownConf cooldown_conf() const {

        std::shared_lock rlock(_cooldown_conf_lock);

        return _cooldown_conf;

    }

    CooldownConf cooldown_conf_unlocked() const { return _cooldown_conf; }

    // Return `true` if update success

    bool update_cooldown_conf(int64_t cooldown_term, int64_t cooldown_replica_id);

    Status remove_all_remote_rowsets();

    void record_unused_remote_rowset(const RowsetId& rowset_id, const std::string& resource,

                                     int64_t num_segments);

    uint32_t calc_cold_data_compaction_score() const;

    std::mutex& get_cold_compaction_lock() { return _cold_compaction_lock; }

    std::shared_mutex& get_cooldown_conf_lock() { return _cooldown_conf_lock; }

    static void async_write_cooldown_meta(TabletSharedPtr tablet);

    // Return `ABORTED` if should not to retry again

    Status write_cooldown_meta();

    ////////////////////////////////////////////////////////////////////////////

    // end cooldown functions

    ////////////////////////////////////////////////////////////////////////////

    CalcDeleteBitmapExecutor* calc_delete_bitmap_executor() override;

    Status save_delete_bitmap(const TabletTxnInfo* txn_info, int64_t txn_id,

                              DeleteBitmapPtr delete_bitmap, RowsetWriter* rowset_writer,

                              const RowsetIdUnorderedSet& cur_rowset_ids,

                              int64_t lock_id = -1) override;

    void merge_delete_bitmap(const DeleteBitmap& delete_bitmap);

    bool check_all_rowset_segment();

    void update_max_version_schema(const TabletSchemaSPtr& tablet_schema);

    void set_skip_compaction(bool skip,

                             CompactionType compaction_type = CompactionType::CUMULATIVE_COMPACTION,

                             int64_t start = -1);

    bool should_skip_compaction(CompactionType compaction_type, int64_t now);

    std::vector<std::string> get_binlog_filepath(std::string_view binlog_version) const;

    std::pair<std::string, int64_t> get_binlog_info(std::string_view binlog_version) const;

    std::string get_rowset_binlog_meta(std::string_view binlog_version,

                                       std::string_view rowset_id) const;

    Status get_rowset_binlog_metas(const std::vector<int64_t>& binlog_versions,

                                   RowsetBinlogMetasPB* metas_pb);

    Status get_rowset_binlog_metas(Version binlog_versions, RowsetBinlogMetasPB* metas_pb);

    std::string get_segment_filepath(std::string_view rowset_id,

                                     std::string_view segment_index) const;

    std::string get_segment_filepath(std::string_view rowset_id, int64_t segment_index) const;

    bool can_add_binlog(uint64_t total_binlog_size) const;

    void gc_binlogs(int64_t version);

    Status ingest_binlog_metas(RowsetBinlogMetasPB* metas_pb);

    void report_error(const Status& st);

    inline int64_t get_io_error_times() const { return _io_error_times; }

    inline bool is_io_error_too_times() const {

        return config::max_tablet_io_errors > 0 && _io_error_times >= config::max_tablet_io_errors;

    }

    int64_t get_table_id() { return _tablet_meta->table_id(); }

    // binlog related functions

    bool is_enable_binlog();

    bool is_binlog_enabled() { return _tablet_meta->binlog_config().is_enable(); }

    int64_t binlog_ttl_ms() const { return _tablet_meta->binlog_config().ttl_seconds(); }

    int64_t binlog_max_bytes() const { return _tablet_meta->binlog_config().max_bytes(); }

    void set_binlog_config(BinlogConfig binlog_config);

    void set_alter_failed(bool alter_failed) { _alter_failed = alter_failed; }

    bool is_alter_failed() { return _alter_failed; }

    void set_is_full_compaction_running(bool is_full_compaction_running) {

        _is_full_compaction_running = is_full_compaction_running;

    }

    inline bool is_full_compaction_running() const { return _is_full_compaction_running; }

    void clear_cache() override;

    int32_t get_compaction_score() const { return _compaction_score; }

    void set_compaction_score(int32_t compaction_score) { _compaction_score = compaction_score; }

    void add_compaction_score(int32_t score) {

        if (_compaction_score < 0) {

            return;

        }

        _compaction_score += score;

    }

    void minus_compaction_score(int32_t score) {

        if (_compaction_score < 0) {

            return;

        }

        _compaction_score -= score;

    }

private:

    Status _init_once_action();

    bool _contains_rowset(const RowsetId rowset_id);

    Status _contains_version(const Version& version);

    // Returns:

    // version: the max continuous version from beginning

    // max_version: the max version of this tablet

    void _max_continuous_version_from_beginning_unlocked(Version* version, Version* max_version,

                                                         bool* has_version_cross) const;

    RowsetSharedPtr _rowset_with_largest_size();

    /// Delete stale rowset by version. This method not only delete the version in expired rowset map,

    /// but also delete the version in rowset meta vector.

    void _delete_stale_rowset_by_version(const Version& version);

    uint32_t _calc_cumulative_compaction_score(

            std::shared_ptr<CumulativeCompactionPolicy> cumulative_compaction_policy);

    uint32_t _calc_base_compaction_score() const;

    std::vector<RowsetSharedPtr> _pick_visible_rowsets_to_compaction(int64_t min_start_version,

                                                                     int64_t max_start_version);

    void _init_context_common_fields(RowsetWriterContext& context);

    ////////////////////////////////////////////////////////////////////////////

    // begin cooldown functions

    ////////////////////////////////////////////////////////////////////////////

    Status _cooldown_data(RowsetSharedPtr rowset);

    Status _follow_cooldowned_data();

    Status _read_cooldown_meta(const StorageResource& storage_resource,

                               TabletMetaPB* tablet_meta_pb);

    bool _has_data_to_cooldown();

    int64_t _get_newest_cooldown_time(const RowsetSharedPtr& rowset);

    ////////////////////////////////////////////////////////////////////////////

    // end cooldown functions

    ////////////////////////////////////////////////////////////////////////////

    void _clear_cache_by_rowset(const BetaRowsetSharedPtr& rowset);

    void check_table_size_correctness();

    std::string get_segment_path(const RowsetMetaSharedPtr& rs_meta, int64_t seg_id);

    int64_t get_segment_file_size(const RowsetMetaSharedPtr& rs_meta);

    int64_t get_inverted_index_file_size(const RowsetMetaSharedPtr& rs_meta);

public:

    static const int64_t K_INVALID_CUMULATIVE_POINT = -1;

private:

    StorageEngine& _engine;

    DataDir* _data_dir = nullptr;

    std::string _tablet_path;

    DorisCallOnce<Status> _init_once;

    // meta store lock is used for prevent 2 threads do checkpoint concurrently

    // it will be used in econ-mode in the future

    std::shared_mutex _meta_store_lock;

    std::mutex _ingest_lock;

    std::mutex _base_compaction_lock;

    std::mutex _cumulative_compaction_lock;

    std::shared_timed_mutex _migration_lock;

    std::mutex _build_inverted_index_lock;

    // In unique key table with MoW, we should guarantee that only one

    // writer can update rowset and delete bitmap at the same time.

    // We use a separate lock rather than _meta_lock, to avoid blocking read queries

    // during publish_txn, which might take hundreds of milliseconds

    mutable std::mutex _rowset_update_lock;

    // if this tablet is broken, set to true. default is false

    std::atomic<bool> _is_bad;

    // timestamp of last cumu compaction failure

    std::atomic<int64_t> _last_cumu_compaction_failure_millis;

    // timestamp of last base compaction failure

    std::atomic<int64_t> _last_base_compaction_failure_millis;

    // timestamp of last full compaction failure

    std::atomic<int64_t> _last_full_compaction_failure_millis;

    // timestamp of last cumu compaction success

    std::atomic<int64_t> _last_cumu_compaction_success_millis;

    // timestamp of last base compaction success

    std::atomic<int64_t> _last_base_compaction_success_millis;

    // timestamp of last full compaction success

    std::atomic<int64_t> _last_full_compaction_success_millis;

    // timestamp of last base compaction schedule time

    std::atomic<int64_t> _last_base_compaction_schedule_millis;

    std::atomic<int64_t> _cumulative_point;

    std::atomic<int64_t> _cumulative_promotion_size;

    std::atomic<int32_t> _newly_created_rowset_num;

    std::atomic<int64_t> _last_checkpoint_time;

    std::string _last_base_compaction_status;

    // single replica compaction status

    std::string _last_single_compaction_failure_status;

    Version _last_fetched_version;

    // cumulative compaction policy

    std::shared_ptr<CumulativeCompactionPolicy> _cumulative_compaction_policy;

    std::string_view _cumulative_compaction_type;

    // use a separate thread to check all tablets paths existence

    std::atomic<bool> _is_tablet_path_exists;

    int64_t _last_missed_version;

    int64_t _last_missed_time_s;

    bool _skip_cumu_compaction = false;

    int64_t _skip_cumu_compaction_ts;

    bool _skip_base_compaction = false;

    int64_t _skip_base_compaction_ts;

    // cooldown related

    CooldownConf _cooldown_conf;

    // `_cooldown_conf_lock` is used to serialize update cooldown conf and all operations that:

    // 1. read cooldown conf

    // 2. upload rowsets to remote storage

    // 3. update cooldown meta id

    mutable std::shared_mutex _cooldown_conf_lock;

    // `_cold_compaction_lock` is used to serialize cold data compaction and all operations that

    // may delete compaction input rowsets.

    std::mutex _cold_compaction_lock;

    int64_t _last_failed_follow_cooldown_time = 0;

    // `_alter_failed` is used to indicate whether the tablet failed to perform a schema change

    std::atomic<bool> _alter_failed = false;

    int64_t _io_error_times = 0;

    // partition's visible version. it sync from fe, but not real-time.

    std::shared_ptr<const VersionWithTime> _visible_version;

    std::atomic_bool _is_full_compaction_running = false;

    int32_t _compaction_score = -1;

    int32_t _score_check_cnt = 0;

};

inline CumulativeCompactionPolicy* Tablet::cumulative_compaction_policy() {

    return _cumulative_compaction_policy.get();

}

inline bool Tablet::init_succeeded() {

    return _init_once.has_called() && _init_once.stored_result().ok();

}

inline bool Tablet::is_used() {

    return !_is_bad && _data_dir->is_used();

}

inline void Tablet::register_tablet_into_dir() {

    _data_dir->register_tablet(this);

}

inline void Tablet::deregister_tablet_from_dir() {

    _data_dir->deregister_tablet(this);

}

inline int64_t Tablet::cumulative_layer_point() const {

    return _cumulative_point;

}

inline void Tablet::set_cumulative_layer_point(int64_t new_point) {

    // cumulative point should only be reset to -1, or be increased

    CHECK(new_point == Tablet::K_INVALID_CUMULATIVE_POINT || new_point >= _cumulative_point)

            << "Unexpected cumulative point: " << new_point

            << ", origin: " << _cumulative_point.load();

    _cumulative_point = new_point;

}

inline int64_t Tablet::cumulative_promotion_size() const {

    return _cumulative_promotion_size;

}

inline void Tablet::set_cumulative_promotion_size(int64_t new_size) {

    _cumulative_promotion_size = new_size;

}

// TODO(lingbin): Why other methods that need to get information from _tablet_meta

// are not locked, here needs a comment to explain.

inline size_t Tablet::tablet_footprint() {

    std::shared_lock rdlock(_meta_lock);

    return _tablet_meta->tablet_footprint();

}

inline size_t Tablet::tablet_local_size() {

    std::shared_lock rdlock(_meta_lock);

    return _tablet_meta->tablet_local_size();

}

inline size_t Tablet::tablet_remote_size() {

    std::shared_lock rdlock(_meta_lock);

    return _tablet_meta->tablet_remote_size();

}

// TODO(lingbin): Why other methods which need to get information from _tablet_meta

// are not locked, here needs a comment to explain.

inline size_t Tablet::num_rows() {

    std::shared_lock rdlock(_meta_lock);

    return _tablet_meta->num_rows();

}

inline int Tablet::version_count() const {

    std::shared_lock rdlock(_meta_lock);

    return _tablet_meta->version_count();

}

inline int Tablet::stale_version_count() const {

    std::shared_lock rdlock(_meta_lock);

    return _tablet_meta->stale_version_count();

}

inline Version Tablet::max_version() const {

    std::shared_lock rdlock(_meta_lock);

    return _tablet_meta->max_version();

}

inline uint64_t Tablet::segment_count() const {

    std::shared_lock rdlock(_meta_lock);

    uint64_t segment_nums = 0;

    for (const auto& rs_meta : _tablet_meta->all_rs_metas()) {

        segment_nums += rs_meta->num_segments();

    }

    return segment_nums;

}

inline SortType Tablet::sort_type() const {

    return _tablet_meta->tablet_schema()->sort_type();

}

inline size_t Tablet::sort_col_num() const {

    return _tablet_meta->tablet_schema()->sort_col_num();

}

inline size_t Tablet::num_columns() const {

    return _tablet_meta->tablet_schema()->num_columns();

}

inline size_t Tablet::num_null_columns() const {

    return _tablet_meta->tablet_schema()->num_null_columns();

}

inline size_t Tablet::num_short_key_columns() const {

    return _tablet_meta->tablet_schema()->num_short_key_columns();

}

inline size_t Tablet::num_rows_per_row_block() const {

    return _tablet_meta->tablet_schema()->num_rows_per_row_block();

}

inline CompressKind Tablet::compress_kind() const {

    return _tablet_meta->tablet_schema()->compress_kind();

}

inline double Tablet::bloom_filter_fpp() const {

    return _tablet_meta->tablet_schema()->bloom_filter_fpp();

}

inline size_t Tablet::next_unique_id() const {

    return _tablet_meta->tablet_schema()->next_column_unique_id();

}

inline size_t Tablet::row_size() const {

    return _tablet_meta->tablet_schema()->row_size();

}

inline int64_t Tablet::avg_rs_meta_serialize_size() const {

    return _tablet_meta->avg_rs_meta_serialize_size();

}

} // namespace doris