// 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.

#include "cloud/cloud_cumulative_compaction.h"

#include <gen_cpp/cloud.pb.h>

#include "cloud/cloud_meta_mgr.h"

#include "cloud/cloud_tablet_mgr.h"

#include "cloud/config.h"

#include "common/config.h"

#include "common/logging.h"

#include "common/status.h"

#include "cpp/sync_point.h"

#include "service/backend_options.h"

#include "storage/compaction/compaction.h"

#include "storage/compaction/cumulative_compaction_policy.h"

#include "util/debug_points.h"

#include "util/trace.h"

#include "util/uuid_generator.h"

namespace doris {

using namespace ErrorCode;

bvar::Adder<uint64_t> cumu_output_size("cumu_compaction", "output_size");

bvar::LatencyRecorder g_cu_compaction_hold_delete_bitmap_lock_time_ms(

        "cu_compaction_hold_delete_bitmap_lock_time_ms");

CloudCumulativeCompaction::CloudCumulativeCompaction(CloudStorageEngine& engine,

                                                     CloudTabletSPtr tablet)

        : CloudCompactionMixin(engine, tablet,

                               "BaseCompaction:" + std::to_string(tablet->tablet_id())) {}

CloudCumulativeCompaction::~CloudCumulativeCompaction() = default;

Status CloudCumulativeCompaction::prepare_compact() {

    DBUG_EXECUTE_IF("CloudCumulativeCompaction.prepare_compact.sleep", { sleep(5); })

    Status st;

    Defer defer_set_st([&] {

        if (!st.ok()) {

            cloud_tablet()->set_last_cumu_compaction_status(st.to_string());

        }

    });

    if (_tablet->tablet_state() != TABLET_RUNNING &&

        (!config::enable_new_tablet_do_compaction ||

         static_cast<CloudTablet*>(_tablet.get())->alter_version() == -1)) {

        st = Status::InternalError("invalid tablet state. tablet_id={}", _tablet->tablet_id());

        return st;

    }

    std::vector<std::shared_ptr<CloudCumulativeCompaction>> cumu_compactions;

    _engine.get_cumu_compaction(_tablet->tablet_id(), cumu_compactions);

    if (!cumu_compactions.empty()) {

        for (auto& cumu : cumu_compactions) {

            _max_conflict_version =

                    std::max(_max_conflict_version, cumu->_input_rowsets.back()->end_version());

        }

    }

    bool need_sync_tablet = true;

    {

        std::shared_lock rlock(_tablet->get_header_lock());

        // If number of rowsets is equal to approximate_num_rowsets, it is very likely that this tablet has been

        // synchronized with meta-service.

        if (_tablet->tablet_meta()->all_rs_metas().size() >=

                    cloud_tablet()->fetch_add_approximate_num_rowsets(0) &&

            cloud_tablet()->last_sync_time_s > 0) {

            need_sync_tablet = false;

        }

    }

    if (need_sync_tablet) {

        st = cloud_tablet()->sync_rowsets();

        RETURN_IF_ERROR(st);

    }

    // pick rowsets to compact

    st = pick_rowsets_to_compact();

    if (!st.ok()) {

        if (_last_delete_version.first != -1) {

            // we meet a delete version, should increase the cumulative point to let base compaction handle the delete version.

            // plus 1 to skip the delete version.

            // NOTICE: after that, the cumulative point may be larger than max version of this tablet, but it doesn't matter.

            update_cumulative_point();

            if (!config::enable_sleep_between_delete_cumu_compaction) {

                st = Status::Error<CUMULATIVE_MEET_DELETE_VERSION>(

                        "cumulative compaction meet delete version");

            }

        }

        return st;

    }

    for (auto& rs : _input_rowsets) {

        _input_row_num += rs->num_rows();

        _input_segments += rs->num_segments();

        _input_rowsets_data_size += rs->data_disk_size();

        _input_rowsets_index_size += rs->index_disk_size();

        _input_rowsets_total_size += rs->total_disk_size();

    }

    LOG_INFO("start CloudCumulativeCompaction, tablet_id={}, range=[{}-{}]", _tablet->tablet_id(),

             _input_rowsets.front()->start_version(), _input_rowsets.back()->end_version())

            .tag("job_id", _uuid)

            .tag("input_rowsets", _input_rowsets.size())

            .tag("input_rows", _input_row_num)

            .tag("input_segments", _input_segments)

            .tag("input_rowsets_data_size", _input_rowsets_data_size)

            .tag("input_rowsets_index_size", _input_rowsets_index_size)

            .tag("input_rowsets_total_size", _input_rowsets_total_size)

            .tag("tablet_max_version", cloud_tablet()->max_version_unlocked())

            .tag("cumulative_point", cloud_tablet()->cumulative_layer_point())

            .tag("num_rowsets", cloud_tablet()->fetch_add_approximate_num_rowsets(0))

            .tag("cumu_num_rowsets", cloud_tablet()->fetch_add_approximate_cumu_num_rowsets(0));

    return st;

}

Status CloudCumulativeCompaction::request_global_lock() {

    // prepare compaction job

    cloud::TabletJobInfoPB job;

    auto idx = job.mutable_idx();

    idx->set_tablet_id(_tablet->tablet_id());

    idx->set_table_id(_tablet->table_id());

    idx->set_index_id(_tablet->index_id());

    idx->set_partition_id(_tablet->partition_id());

    auto compaction_job = job.add_compaction();

    compaction_job->set_id(_uuid);

    compaction_job->set_initiator(BackendOptions::get_localhost() + ':' +

                                  std::to_string(config::heartbeat_service_port));

    compaction_job->set_type(cloud::TabletCompactionJobPB::CUMULATIVE);

    compaction_job->set_base_compaction_cnt(_base_compaction_cnt);

    compaction_job->set_cumulative_compaction_cnt(_cumulative_compaction_cnt);

    using namespace std::chrono;

    int64_t now = duration_cast<seconds>(system_clock::now().time_since_epoch()).count();

    _expiration = now + config::compaction_timeout_seconds;

    compaction_job->set_expiration(_expiration);

    compaction_job->set_lease(now + config::lease_compaction_interval_seconds * 4);

    compaction_job->add_input_versions(_input_rowsets.front()->start_version());

    compaction_job->add_input_versions(_input_rowsets.back()->end_version());

    // Set input version range to let meta-service check version range conflict

    compaction_job->set_check_input_versions_range(config::enable_parallel_cumu_compaction);

    cloud::StartTabletJobResponse resp;

    Status st = _engine.meta_mgr().prepare_tablet_job(job, &resp);

    if (!st.ok()) {

        if (resp.status().code() == cloud::STALE_TABLET_CACHE) {

            // set last_sync_time to 0 to force sync tablet next time

            cloud_tablet()->last_sync_time_s = 0;

        } else if (resp.status().code() == cloud::TABLET_NOT_FOUND) {

            // tablet not found

            cloud_tablet()->clear_cache();

        } else if (resp.status().code() == cloud::JOB_TABLET_BUSY) {

            LOG_WARNING("failed to prepare cumu compaction")

                    .tag("job_id", _uuid)

                    .tag("msg", resp.status().msg());

            return Status::Error<CUMULATIVE_NO_SUITABLE_VERSION>(

                    "cumu no suitable versions: job tablet busy");

        } else if (resp.status().code() == cloud::JOB_CHECK_ALTER_VERSION) {

            (static_cast<CloudTablet*>(_tablet.get()))->set_alter_version(resp.alter_version());

            std::stringstream ss;

            ss << "failed to prepare cumu compaction. Check compaction input versions "

                  "failed in schema change. "

                  "input_version_start="

               << compaction_job->input_versions(0)

               << " input_version_end=" << compaction_job->input_versions(1)

               << " schema_change_alter_version=" << resp.alter_version();

            std::string msg = ss.str();

            LOG(WARNING) << msg;

            return Status::InternalError(msg);

        }

    }

    return st;

}

Status CloudCumulativeCompaction::execute_compact() {

    TEST_SYNC_POINT_RETURN_WITH_VALUE("CloudCumulativeCompaction::execute_compact_impl",

                                      Status::OK(), this);

    SCOPED_ATTACH_TASK(_mem_tracker);

    using namespace std::chrono;

    auto start = steady_clock::now();

    Status st;

    Defer defer_set_st([&] {

        cloud_tablet()->set_last_cumu_compaction_status(st.to_string());

        if (!st.ok()) {

            cloud_tablet()->set_last_cumu_compaction_failure_time(UnixMillis());

        } else {

            cloud_tablet()->set_last_cumu_compaction_success_time(UnixMillis());

        }

    });

    st = CloudCompactionMixin::execute_compact();

    if (!st.ok()) {

        LOG(WARNING) << "fail to do " << compaction_name() << ". res=" << st

                     << ", tablet=" << _tablet->tablet_id()

                     << ", output_version=" << _output_version;

        return st;

    }

    LOG_INFO("finish CloudCumulativeCompaction, tablet_id={}, cost={}ms, range=[{}-{}]",

             _tablet->tablet_id(), duration_cast<milliseconds>(steady_clock::now() - start).count(),

             _input_rowsets.front()->start_version(), _input_rowsets.back()->end_version())

            .tag("job_id", _uuid)

            .tag("input_rowsets", _input_rowsets.size())

            .tag("input_rows", _input_row_num)

            .tag("input_segments", _input_segments)

            .tag("input_rowsets_data_size", _input_rowsets_data_size)

            .tag("input_rowsets_index_size", _input_rowsets_index_size)

            .tag("input_rowsets_total_size", _input_rowsets_total_size)

            .tag("output_rows", _output_rowset->num_rows())

            .tag("output_segments", _output_rowset->num_segments())

            .tag("output_rowset_data_size", _output_rowset->data_disk_size())

            .tag("output_rowset_index_size", _output_rowset->index_disk_size())

            .tag("output_rowset_total_size", _output_rowset->total_disk_size())

            .tag("tablet_max_version", _tablet->max_version_unlocked())

            .tag("cumulative_point", cloud_tablet()->cumulative_layer_point())

            .tag("num_rowsets", cloud_tablet()->fetch_add_approximate_num_rowsets(0))

            .tag("cumu_num_rowsets", cloud_tablet()->fetch_add_approximate_cumu_num_rowsets(0))

            .tag("local_read_time_us", _stats.cloud_local_read_time)

            .tag("remote_read_time_us", _stats.cloud_remote_read_time)

            .tag("local_read_bytes", _local_read_bytes_total)

            .tag("remote_read_bytes", _remote_read_bytes_total);

    _state = CompactionState::SUCCESS;

    DorisMetrics::instance()->cumulative_compaction_deltas_total->increment(_input_rowsets.size());

    DorisMetrics::instance()->cumulative_compaction_bytes_total->increment(

            _input_rowsets_total_size);

    cumu_output_size << _output_rowset->total_disk_size();

    st = Status::OK();

    return st;

}

Status CloudCumulativeCompaction::modify_rowsets() {

    // calculate new cumulative point

    int64_t input_cumulative_point = cloud_tablet()->cumulative_layer_point();

    auto compaction_policy = cloud_tablet()->tablet_meta()->compaction_policy();

    int64_t new_cumulative_point =

            _engine.cumu_compaction_policy(compaction_policy)

                    ->new_cumulative_point(cloud_tablet(), _output_rowset, _last_delete_version,

                                           input_cumulative_point);

    // commit compaction job

    cloud::TabletJobInfoPB job;

    auto idx = job.mutable_idx();

    idx->set_tablet_id(_tablet->tablet_id());

    idx->set_table_id(_tablet->table_id());

    idx->set_index_id(_tablet->index_id());

    idx->set_partition_id(_tablet->partition_id());

    auto compaction_job = job.add_compaction();

    compaction_job->set_id(_uuid);

    compaction_job->set_initiator(BackendOptions::get_localhost() + ':' +

                                  std::to_string(config::heartbeat_service_port));

    compaction_job->set_type(cloud::TabletCompactionJobPB::CUMULATIVE);

    compaction_job->set_input_cumulative_point(input_cumulative_point);

    compaction_job->set_output_cumulative_point(new_cumulative_point);

    compaction_job->set_num_input_rows(_input_row_num);

    compaction_job->set_num_output_rows(_output_rowset->num_rows());

    compaction_job->set_size_input_rowsets(_input_rowsets_total_size);

    compaction_job->set_size_output_rowsets(_output_rowset->total_disk_size());

    compaction_job->set_num_input_segments(_input_segments);

    compaction_job->set_num_output_segments(_output_rowset->num_segments());

    compaction_job->set_num_input_rowsets(num_input_rowsets());

    compaction_job->set_num_output_rowsets(1);

    compaction_job->add_input_versions(_input_rowsets.front()->start_version());

    compaction_job->add_input_versions(_input_rowsets.back()->end_version());

    compaction_job->add_output_versions(_output_rowset->end_version());

    compaction_job->add_txn_id(_output_rowset->txn_id());

    compaction_job->add_output_rowset_ids(_output_rowset->rowset_id().to_string());

    compaction_job->set_index_size_input_rowsets(_input_rowsets_index_size);

    compaction_job->set_segment_size_input_rowsets(_input_rowsets_data_size);

    compaction_job->set_index_size_output_rowsets(_output_rowset->index_disk_size());

    compaction_job->set_segment_size_output_rowsets(_output_rowset->data_disk_size());

    DBUG_EXECUTE_IF("CloudCumulativeCompaction::modify_rowsets.enable_spin_wait", {

        LOG(INFO) << "CloudCumulativeCompaction::modify_rowsets.enable_spin_wait, start";

        while (DebugPoints::instance()->is_enable(

                "CloudCumulativeCompaction::modify_rowsets.block")) {

            std::this_thread::sleep_for(std::chrono::milliseconds(50));

        }

        LOG(INFO) << "CloudCumulativeCompaction::modify_rowsets.enable_spin_wait, exit";

    });

    // Block only NOTREADY tablets (SC new tablets) before compaction commit.

    // RUNNING tablets (system tables, base tablets) are not affected.

    DBUG_EXECUTE_IF("CloudCumulativeCompaction::modify_rowsets.block_notready", {

        if (_tablet->tablet_state() == TABLET_NOTREADY) {

            LOG(INFO) << "block NOTREADY tablet compaction before commit"

                      << ", tablet_id=" << _tablet->tablet_id() << ", output=["

                      << _input_rowsets.front()->start_version() << "-"

                      << _input_rowsets.back()->end_version() << "]";

            while (DebugPoints::instance()->is_enable(

                    "CloudCumulativeCompaction::modify_rowsets.block_notready")) {

                std::this_thread::sleep_for(std::chrono::milliseconds(50));

            }

            LOG(INFO) << "release NOTREADY tablet compaction, tablet_id=" << _tablet->tablet_id();

        }

    });

    DeleteBitmapPtr output_rowset_delete_bitmap = nullptr;

    int64_t initiator = this->initiator();

    int64_t get_delete_bitmap_lock_start_time = 0;

    if (_tablet->keys_type() == KeysType::UNIQUE_KEYS &&

        _tablet->enable_unique_key_merge_on_write()) {

        RETURN_IF_ERROR(cloud_tablet()->calc_delete_bitmap_for_compaction(

                _input_rowsets, _output_rowset, *_rowid_conversion, compaction_type(),

                _stats.merged_rows, _stats.filtered_rows, initiator, output_rowset_delete_bitmap,

                _allow_delete_in_cumu_compaction, get_delete_bitmap_lock_start_time));

        LOG_INFO("update delete bitmap in CloudCumulativeCompaction, tablet_id={}, range=[{}-{}]",

                 _tablet->tablet_id(), _input_rowsets.front()->start_version(),

                 _input_rowsets.back()->end_version())

                .tag("job_id", _uuid)

                .tag("initiator", initiator)

                .tag("input_rowsets", _input_rowsets.size())

                .tag("input_rows", _input_row_num)

                .tag("input_segments", _input_segments)

                .tag("number_output_delete_bitmap",

                     output_rowset_delete_bitmap->delete_bitmap.size());

        compaction_job->set_delete_bitmap_lock_initiator(initiator);

    }

    DBUG_EXECUTE_IF("CumulativeCompaction.modify_rowsets.trigger_abort_job_failed", {

        LOG(INFO) << "CumulativeCompaction.modify_rowsets.trigger_abort_job_failed for tablet_id"

                  << cloud_tablet()->tablet_id();

        return Status::InternalError(

                "CumulativeCompaction.modify_rowsets.trigger_abort_job_failed for tablet_id {}",

                cloud_tablet()->tablet_id());

    });

    cloud::FinishTabletJobResponse resp;

    auto st = _engine.meta_mgr().commit_tablet_job(job, &resp);

    if (_tablet->keys_type() == KeysType::UNIQUE_KEYS &&

        _tablet->enable_unique_key_merge_on_write()) {

        int64_t hold_delete_bitmap_lock_time_ms =

                (MonotonicMicros() - get_delete_bitmap_lock_start_time) / 1000;

        g_cu_compaction_hold_delete_bitmap_lock_time_ms << hold_delete_bitmap_lock_time_ms;

    }

    if (resp.has_alter_version()) {

        (static_cast<CloudTablet*>(_tablet.get()))->set_alter_version(resp.alter_version());

    }

    if (!st.ok()) {

        if (resp.status().code() == cloud::TABLET_NOT_FOUND) {

            cloud_tablet()->clear_cache();

        } else if (resp.status().code() == cloud::JOB_CHECK_ALTER_VERSION) {

            std::stringstream ss;

            ss << "failed to prepare cumu compaction. Check compaction input versions "

                  "failed in schema change. "

                  "input_version_start="

               << compaction_job->input_versions(0)

               << " input_version_end=" << compaction_job->input_versions(1)

               << " schema_change_alter_version=" << resp.alter_version();

            std::string msg = ss.str();

            LOG(WARNING) << msg;

            return Status::InternalError(msg);

        }

        return st;

    }

    auto& stats = resp.stats();

    LOG(INFO) << "tablet stats=" << stats.ShortDebugString();

    {

        std::unique_lock wrlock(_tablet->get_header_lock());

        // clang-format off

        cloud_tablet()->set_last_base_compaction_success_time(std::max(cloud_tablet()->last_base_compaction_success_time(), stats.last_base_compaction_time_ms()));

        cloud_tablet()->set_last_cumu_compaction_success_time(std::max(cloud_tablet()->last_cumu_compaction_success_time(), stats.last_cumu_compaction_time_ms()));

        cloud_tablet()->set_last_full_compaction_success_time(std::max(cloud_tablet()->last_full_compaction_success_time(), stats.last_full_compaction_time_ms()));

        // clang-format on

        if (cloud_tablet()->cumulative_compaction_cnt() >= stats.cumulative_compaction_cnt()) {

            // This could happen while calling `sync_tablet_rowsets` during `commit_tablet_job`, or parallel cumu compactions which are

            // committed later increase tablet.cumulative_compaction_cnt (see CloudCompactionTest.parallel_cumu_compaction)

            return Status::OK();

        }

        // Try to make output rowset visible immediately in tablet cache, instead of waiting for next synchronization from meta-service.

        if (stats.cumulative_point() > cloud_tablet()->cumulative_layer_point() &&

            stats.cumulative_compaction_cnt() != cloud_tablet()->cumulative_compaction_cnt() + 1) {

            // This could happen when there are multiple parallel cumu compaction committed, tablet cache lags several

            // cumu compactions behind meta-service (stats.cumulative_compaction_cnt > tablet.cumulative_compaction_cnt + 1).

            // If `cumu_point` of the tablet cache also falls behind, MUST ONLY synchronize tablet cache from meta-service,

            // otherwise may cause the tablet to be unable to synchronize the rowset meta changes generated by other cumu compaction.

            return Status::OK();

        }

        if (_input_rowsets.size() == 1) {

            DCHECK_EQ(_output_rowset->version(), _input_rowsets[0]->version());

            // MUST NOT move input rowset to stale path

            cloud_tablet()->add_rowsets({_output_rowset}, true, wrlock, true);

        } else {

            cloud_tablet()->delete_rowsets(_input_rowsets, wrlock);

            cloud_tablet()->add_rowsets({_output_rowset}, false, wrlock);

        }

        // ATTN: MUST NOT update `base_compaction_cnt` which are used when sync rowsets, otherwise may cause

        // the tablet to be unable to synchronize the rowset meta changes generated by base compaction.

        cloud_tablet()->set_cumulative_compaction_cnt(stats.cumulative_compaction_cnt());

        cloud_tablet()->set_cumulative_layer_point(stats.cumulative_point());

        if (output_rowset_delete_bitmap) {

            _tablet->tablet_meta()->delete_bitmap().merge(*output_rowset_delete_bitmap);

        }

        if (stats.base_compaction_cnt() >= cloud_tablet()->base_compaction_cnt()) {

            cloud_tablet()->reset_approximate_stats(stats.num_rowsets(), stats.num_segments(),

                                                    stats.num_rows(), stats.data_size());

        }

    }

    // agg delete bitmap for pre rowsets

    if (config::enable_agg_and_remove_pre_rowsets_delete_bitmap &&

        _tablet->keys_type() == KeysType::UNIQUE_KEYS &&

        _tablet->enable_unique_key_merge_on_write() && _input_rowsets.size() != 1) {

        OlapStopWatch watch;

        std::vector<RowsetSharedPtr> pre_rowsets {};

        {

            std::shared_lock rlock(_tablet->get_header_lock());

            for (const auto& it2 : cloud_tablet()->rowset_map()) {

                if (it2.first.second < _output_rowset->start_version()) {

                    pre_rowsets.emplace_back(it2.second);

                }

            }

        }

        std::sort(pre_rowsets.begin(), pre_rowsets.end(), Rowset::comparator);

        auto pre_rowsets_delete_bitmap = std::make_shared<DeleteBitmap>(_tablet->tablet_id());

        std::map<std::string, int64_t> pre_rowset_to_versions;

        cloud_tablet()->agg_delete_bitmap_for_compaction(

                _output_rowset->start_version(), _output_rowset->end_version(), pre_rowsets,

                pre_rowsets_delete_bitmap, pre_rowset_to_versions);

        // update delete bitmap to ms

        DBUG_EXECUTE_IF(

                "CumulativeCompaction.modify_rowsets.cloud_update_delete_bitmap_without_lock.block",

                DBUG_BLOCK);

        auto status = _engine.meta_mgr().cloud_update_delete_bitmap_without_lock(

                *cloud_tablet(), pre_rowsets_delete_bitmap.get(), pre_rowset_to_versions,

                cloud_tablet()->table_id(), _output_rowset->start_version(),

                _output_rowset->end_version());

        if (!status.ok()) {

            LOG(WARNING) << "failed to agg pre rowsets delete bitmap to ms. tablet_id="

                         << _tablet->tablet_id() << ", pre rowset num=" << pre_rowsets.size()

                         << ", output version=" << _output_rowset->version().to_string()

                         << ", status=" << status.to_string();

        } else {

            LOG(INFO) << "agg pre rowsets delete bitmap to ms. tablet_id=" << _tablet->tablet_id()

                      << ", pre rowset num=" << pre_rowsets.size()

                      << ", output version=" << _output_rowset->version().to_string()

                      << ", cost(us)=" << watch.get_elapse_time_us();

        }

    }

    DBUG_EXECUTE_IF("CumulativeCompaction.modify_rowsets.delete_expired_stale_rowset", {

        LOG(INFO) << "delete_expired_stale_rowsets for tablet=" << _tablet->tablet_id();

        _engine.tablet_mgr().vacuum_stale_rowsets(CountDownLatch(1));

    });

    _tablet->prefill_dbm_agg_cache_after_compaction(_output_rowset);

    return Status::OK();

}

Status CloudCumulativeCompaction::garbage_collection() {

    RETURN_IF_ERROR(CloudCompactionMixin::garbage_collection());

    cloud::TabletJobInfoPB job;

    auto idx = job.mutable_idx();

    idx->set_tablet_id(_tablet->tablet_id());

    idx->set_table_id(_tablet->table_id());

    idx->set_index_id(_tablet->index_id());

    idx->set_partition_id(_tablet->partition_id());

    auto compaction_job = job.add_compaction();

    compaction_job->set_id(_uuid);

    compaction_job->set_initiator(BackendOptions::get_localhost() + ':' +

                                  std::to_string(config::heartbeat_service_port));

    compaction_job->set_type(cloud::TabletCompactionJobPB::CUMULATIVE);

    if (_tablet->keys_type() == KeysType::UNIQUE_KEYS &&

        _tablet->enable_unique_key_merge_on_write()) {

        compaction_job->set_delete_bitmap_lock_initiator(this->initiator());

    }

    DBUG_EXECUTE_IF("CumulativeCompaction.modify_rowsets.trigger_abort_job_failed", {

        LOG(INFO) << "CumulativeCompaction.modify_rowsets.abort_job_failed for tablet_id"

                  << cloud_tablet()->tablet_id();

        return Status::InternalError(

                "CumulativeCompaction.modify_rowsets.abort_job_failed for tablet_id {}",

                cloud_tablet()->tablet_id());

    });

    auto st = _engine.meta_mgr().abort_tablet_job(job);

    if (!st.ok()) {

        LOG_WARNING("failed to abort compaction job")

                .tag("job_id", _uuid)

                .tag("tablet_id", _tablet->tablet_id())

                .error(st);

    }

    return st;

}

Status CloudCumulativeCompaction::pick_rowsets_to_compact() {

    _input_rowsets.clear();

    std::vector<RowsetSharedPtr> candidate_rowsets;

    {

        std::shared_lock rlock(_tablet->get_header_lock());

        _base_compaction_cnt = cloud_tablet()->base_compaction_cnt();

        _cumulative_compaction_cnt = cloud_tablet()->cumulative_compaction_cnt();

        int64_t candidate_version = std::max(

                std::max(cloud_tablet()->cumulative_layer_point(), _max_conflict_version + 1),

                cloud_tablet()->alter_version() + 1);

        // Get all rowsets whose version >= `candidate_version` as candidate rowsets

        cloud_tablet()->traverse_rowsets(

                [&candidate_rowsets, candidate_version](const RowsetSharedPtr& rs) {

                    if (rs->start_version() >= candidate_version) {

                        candidate_rowsets.push_back(rs);

                    }

                });

    }

    if (candidate_rowsets.empty()) {

        return Status::Error<CUMULATIVE_NO_SUITABLE_VERSION>(

                "no suitable versions: candidate rowsets empty");

    }

    std::sort(candidate_rowsets.begin(), candidate_rowsets.end(), Rowset::comparator);

    if (auto st = check_version_continuity(candidate_rowsets); !st.ok()) {

        DCHECK(false) << st;

        return st;

    }

    int64_t max_score = config::cumulative_compaction_max_deltas;

    double process_memory_usage =

            cast_set<double>(doris::GlobalMemoryArbitrator::process_memory_usage());

    bool memory_usage_high =

            process_memory_usage > cast_set<double>(MemInfo::soft_mem_limit()) * 0.8;

    if (cloud_tablet()->last_compaction_status.is<ErrorCode::MEM_LIMIT_EXCEEDED>() ||

        memory_usage_high) {

        max_score = std::max(config::cumulative_compaction_max_deltas /

                                     config::cumulative_compaction_max_deltas_factor,

                             config::cumulative_compaction_min_deltas + 1);

    }

    size_t compaction_score = 0;

    auto compaction_policy = cloud_tablet()->tablet_meta()->compaction_policy();

    _engine.cumu_compaction_policy(compaction_policy)

            ->pick_input_rowsets(cloud_tablet(), candidate_rowsets, max_score,

                                 config::cumulative_compaction_min_deltas, &_input_rowsets,

                                 &_last_delete_version, &compaction_score);

    if (_input_rowsets.empty()) {

        return Status::Error<CUMULATIVE_NO_SUITABLE_VERSION>(

                "no suitable versions: input rowsets empty");

    } else if (_input_rowsets.size() == 1 &&

               !_input_rowsets.front()->rowset_meta()->is_segments_overlapping()) {

        VLOG_DEBUG << "there is only one rowset and not overlapping. tablet_id="

                   << _tablet->tablet_id() << ", version=" << _input_rowsets.front()->version();

        return Status::Error<CUMULATIVE_NO_SUITABLE_VERSION>(

                "no suitable versions: only one rowset and not overlapping");

    }

    apply_txn_size_truncation_and_log("CloudCumulativeCompaction");

    return Status::OK();

}

void CloudCumulativeCompaction::update_cumulative_point() {

    cloud::TabletJobInfoPB job;

    auto idx = job.mutable_idx();

    idx->set_tablet_id(_tablet->tablet_id());

    idx->set_table_id(_tablet->table_id());

    idx->set_index_id(_tablet->index_id());

    idx->set_partition_id(_tablet->partition_id());

    auto compaction_job = job.add_compaction();

    compaction_job->set_id(_uuid);

    compaction_job->set_initiator(BackendOptions::get_localhost() + ':' +

                                  std::to_string(config::heartbeat_service_port));

    compaction_job->set_type(cloud::TabletCompactionJobPB::EMPTY_CUMULATIVE);

    compaction_job->set_base_compaction_cnt(_base_compaction_cnt);

    compaction_job->set_cumulative_compaction_cnt(_cumulative_compaction_cnt);

    int64_t now = time(nullptr);

    compaction_job->set_lease(now + config::lease_compaction_interval_seconds);

    // No need to set expiration time, since there is no output rowset

    cloud::StartTabletJobResponse start_resp;

    auto st = _engine.meta_mgr().prepare_tablet_job(job, &start_resp);

    if (!st.ok()) {

        if (start_resp.status().code() == cloud::STALE_TABLET_CACHE) {

            // set last_sync_time to 0 to force sync tablet next time

            cloud_tablet()->last_sync_time_s = 0;

        } else if (start_resp.status().code() == cloud::TABLET_NOT_FOUND) {

            // tablet not found

            cloud_tablet()->clear_cache();

        }

        LOG_WARNING("failed to update cumulative point to meta srv")

                .tag("job_id", _uuid)

                .tag("tablet_id", _tablet->tablet_id())

                .error(st);

        return;

    }

    int64_t input_cumulative_point = cloud_tablet()->cumulative_layer_point();

    int64_t output_cumulative_point = _last_delete_version.first + 1;

    compaction_job->set_input_cumulative_point(input_cumulative_point);

    compaction_job->set_output_cumulative_point(output_cumulative_point);

    cloud::FinishTabletJobResponse finish_resp;

    st = _engine.meta_mgr().commit_tablet_job(job, &finish_resp);

    if (!st.ok()) {

        if (finish_resp.status().code() == cloud::TABLET_NOT_FOUND) {

            cloud_tablet()->clear_cache();

        }

        LOG_WARNING("failed to update cumulative point to meta srv")

                .tag("job_id", _uuid)

                .tag("tablet_id", _tablet->tablet_id())

                .error(st);

        return;

    }

    LOG_INFO("do empty cumulative compaction to update cumulative point")

            .tag("job_id", _uuid)

            .tag("tablet_id", _tablet->tablet_id())

            .tag("input_cumulative_point", input_cumulative_point)

            .tag("output_cumulative_point", output_cumulative_point);

    auto& stats = finish_resp.stats();

    LOG(INFO) << "tablet stats=" << stats.ShortDebugString();

    {

        std::lock_guard wrlock(_tablet->get_header_lock());

        // clang-format off

        cloud_tablet()->set_last_base_compaction_success_time(std::max(cloud_tablet()->last_base_compaction_success_time(), stats.last_base_compaction_time_ms()));

        cloud_tablet()->set_last_cumu_compaction_success_time(std::max(cloud_tablet()->last_cumu_compaction_success_time(), stats.last_cumu_compaction_time_ms()));

        // clang-format on

        if (cloud_tablet()->cumulative_compaction_cnt() >= stats.cumulative_compaction_cnt()) {

            // This could happen while calling `sync_tablet_rowsets` during `commit_tablet_job`

            return;

        }

        // ATTN: MUST NOT update `base_compaction_cnt` which are used when sync rowsets, otherwise may cause

        // the tablet to be unable to synchronize the rowset meta changes generated by base compaction.

        cloud_tablet()->set_cumulative_compaction_cnt(cloud_tablet()->cumulative_compaction_cnt() +

                                                      1);

        cloud_tablet()->set_cumulative_layer_point(stats.cumulative_point());

        if (stats.base_compaction_cnt() >= cloud_tablet()->base_compaction_cnt()) {

            cloud_tablet()->reset_approximate_stats(stats.num_rowsets(), stats.num_segments(),

                                                    stats.num_rows(), stats.data_size());

        }

    }

}

void CloudCumulativeCompaction::do_lease() {

    TEST_INJECTION_POINT_RETURN_WITH_VOID("CloudCumulativeCompaction::do_lease");

    if (_state == CompactionState::SUCCESS) {

        return;

    }

    cloud::TabletJobInfoPB job;

    auto idx = job.mutable_idx();

    idx->set_tablet_id(_tablet->tablet_id());

    idx->set_table_id(_tablet->table_id());

    idx->set_index_id(_tablet->index_id());

    idx->set_partition_id(_tablet->partition_id());

    auto compaction_job = job.add_compaction();

    compaction_job->set_id(_uuid);

    using namespace std::chrono;

    int64_t lease_time = duration_cast<seconds>(system_clock::now().time_since_epoch()).count() +

                         config::lease_compaction_interval_seconds * 4;

    compaction_job->set_lease(lease_time);

    auto st = _engine.meta_mgr().lease_tablet_job(job);

    if (!st.ok()) {

        LOG_WARNING("failed to lease compaction job")

                .tag("job_id", _uuid)

                .tag("tablet_id", _tablet->tablet_id())

                .error(st);

    }

}

} // namespace doris