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new e49027a5e66 [feature](cloud) Add CloudTabletMgr (#30089)
e49027a5e66 is described below
commit e49027a5e6657d27c066f87094984dd0d0462f61
Author: plat1ko <platonekos...@gmail.com>
AuthorDate: Fri Jan 19 00:09:06 2024 +0800
[feature](cloud) Add CloudTabletMgr (#30089)
---
be/src/cloud/cloud_storage_engine.h | 3 +
be/src/cloud/cloud_tablet.cpp | 13 ++
be/src/cloud/cloud_tablet.h | 11 ++
be/src/cloud/cloud_tablet_mgr.cpp | 356 +++++++++++++++++++++++++++++++++++
be/src/cloud/cloud_tablet_mgr.h | 75 ++++++++
be/src/cloud/config.cpp | 9 +
be/src/cloud/config.h | 12 ++
be/src/runtime/memory/cache_policy.h | 5 +-
8 files changed, 483 insertions(+), 1 deletion(-)
diff --git a/be/src/cloud/cloud_storage_engine.h
b/be/src/cloud/cloud_storage_engine.h
index 87e3ed52d39..eb76d5e94ef 100644
--- a/be/src/cloud/cloud_storage_engine.h
+++ b/be/src/cloud/cloud_storage_engine.h
@@ -24,6 +24,8 @@ namespace cloud {
class CloudMetaMgr;
}
+class CloudTabletMgr;
+
class CloudStorageEngine {
public:
CloudStorageEngine();
@@ -34,6 +36,7 @@ public:
private:
std::unique_ptr<cloud::CloudMetaMgr> _meta_mgr;
+ std::unique_ptr<CloudTabletMgr> _tablet_mgr;
};
} // namespace doris
diff --git a/be/src/cloud/cloud_tablet.cpp b/be/src/cloud/cloud_tablet.cpp
index 03670df78d1..6beb1e45d94 100644
--- a/be/src/cloud/cloud_tablet.cpp
+++ b/be/src/cloud/cloud_tablet.cpp
@@ -23,6 +23,8 @@
#include <rapidjson/rapidjson.h>
#include <rapidjson/stringbuffer.h>
+#include <atomic>
+
#include "cloud/cloud_meta_mgr.h"
#include "cloud/cloud_storage_engine.h"
#include "io/cache/block/block_file_cache_factory.h"
@@ -365,6 +367,17 @@ Result<std::unique_ptr<RowsetWriter>>
CloudTablet::create_rowset_writer(
Status::NotSupported("CloudTablet::create_rowset_writer is not
implemented"));
}
+int64_t CloudTablet::get_cloud_base_compaction_score() const {
+ return _approximate_num_rowsets.load(std::memory_order_relaxed) -
+ _approximate_cumu_num_rowsets.load(std::memory_order_relaxed);
+}
+
+int64_t CloudTablet::get_cloud_cumu_compaction_score() const {
+ // TODO(plat1ko): Propose an algorithm that considers tablet's key type,
number of delete rowsets,
+ // number of tablet versions simultaneously.
+ return _approximate_cumu_num_deltas.load(std::memory_order_relaxed);
+}
+
// return a json string to show the compaction status of this tablet
void CloudTablet::get_compaction_status(std::string* json_result) {
rapidjson::Document root;
diff --git a/be/src/cloud/cloud_tablet.h b/be/src/cloud/cloud_tablet.h
index 537c8fe134d..bf8db3c9451 100644
--- a/be/src/cloud/cloud_tablet.h
+++ b/be/src/cloud/cloud_tablet.h
@@ -93,6 +93,17 @@ public:
// Return number of deleted stale rowsets
int delete_expired_stale_rowsets();
+ bool has_stale_rowsets() const { return !_stale_rs_version_map.empty(); }
+
+ int64_t get_cloud_base_compaction_score() const;
+ int64_t get_cloud_cumu_compaction_score() const;
+
+ int64_t last_sync_time_s = 0;
+ int64_t last_load_time_ms = 0;
+ int64_t last_base_compaction_success_time_ms = 0;
+ int64_t last_cumu_compaction_success_time_ms = 0;
+ int64_t last_cumu_no_suitable_version_ms = 0;
+
private:
Versions calc_missed_versions(int64_t spec_version);
diff --git a/be/src/cloud/cloud_tablet_mgr.cpp
b/be/src/cloud/cloud_tablet_mgr.cpp
new file mode 100644
index 00000000000..b3ad35257cc
--- /dev/null
+++ b/be/src/cloud/cloud_tablet_mgr.cpp
@@ -0,0 +1,356 @@
+// 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_tablet_mgr.h"
+
+#include <bthread/countdown_event.h>
+
+#include "cloud/cloud_meta_mgr.h"
+#include "cloud/cloud_storage_engine.h"
+#include "cloud/cloud_tablet.h"
+#include "cloud/config.h"
+#include "common/status.h"
+#include "olap/lru_cache.h"
+#include "runtime/memory/cache_policy.h"
+
+namespace doris {
+namespace {
+
+// port from
+//
https://github.com/golang/groupcache/blob/master/singleflight/singleflight.go
+template <typename Key, typename Val>
+class SingleFlight {
+public:
+ SingleFlight() = default;
+
+ SingleFlight(const SingleFlight&) = delete;
+ void operator=(const SingleFlight&) = delete;
+
+ using Loader = std::function<Val(const Key&)>;
+
+ // Do executes and returns the results of the given function, making
+ // sure that only one execution is in-flight for a given key at a
+ // time. If a duplicate comes in, the duplicate caller waits for the
+ // original to complete and receives the same results.
+ Val load(const Key& key, Loader loader) {
+ std::unique_lock lock(_call_map_mtx);
+
+ auto it = _call_map.find(key);
+ if (it != _call_map.end()) {
+ auto call = it->second;
+ lock.unlock();
+ if (int ec = call->event.wait(); ec != 0) {
+ throw std::system_error(std::error_code(ec,
std::system_category()),
+ "CountdownEvent wait failed");
+ }
+ return call->val;
+ }
+ auto call = std::make_shared<Call>();
+ _call_map.emplace(key, call);
+ lock.unlock();
+
+ call->val = loader(key);
+ call->event.signal();
+
+ lock.lock();
+ _call_map.erase(key);
+ lock.unlock();
+
+ return call->val;
+ }
+
+private:
+ // `Call` is an in-flight or completed `load` call
+ struct Call {
+ bthread::CountdownEvent event;
+ Val val;
+ };
+
+ std::mutex _call_map_mtx;
+ std::unordered_map<Key, std::shared_ptr<Call>> _call_map;
+};
+
+SingleFlight<int64_t /* tablet_id */, std::shared_ptr<CloudTablet>>
s_singleflight_load_tablet;
+
+} // namespace
+
+// tablet_id -> cached tablet
+// This map owns all cached tablets. The lifetime of tablet can be longer than
the LRU handle.
+// It's also used for scenarios where users want to access the tablet by
`tablet_id` without changing the LRU order.
+// TODO(plat1ko): multi shard to increase concurrency
+class CloudTabletMgr::TabletMap {
+public:
+ void put(std::shared_ptr<CloudTablet> tablet) {
+ std::lock_guard lock(_mtx);
+ _map[tablet->tablet_id()] = std::move(tablet);
+ }
+
+ void erase(CloudTablet* tablet) {
+ std::lock_guard lock(_mtx);
+ auto it = _map.find(tablet->tablet_id());
+ // According to the implementation of `LRUCache`, `deleter` may be
called after a tablet
+ // with same tablet id insert into cache and `TabletMap`. So we MUST
check if the tablet
+ // instance to be erased is the same one in the map.
+ if (it != _map.end() && it->second.get() == tablet) {
+ _map.erase(it);
+ }
+ }
+
+ std::shared_ptr<CloudTablet> get(int64_t tablet_id) {
+ std::lock_guard lock(_mtx);
+ if (auto it = _map.find(tablet_id); it != _map.end()) {
+ return it->second;
+ }
+ return nullptr;
+ }
+
+ size_t size() { return _map.size(); }
+
+ void traverse(std::function<void(const std::shared_ptr<CloudTablet>&)>
visitor) {
+ std::lock_guard lock(_mtx);
+ for (auto& [_, tablet] : _map) {
+ visitor(tablet);
+ }
+ }
+
+private:
+ std::mutex _mtx;
+ std::unordered_map<int64_t, std::shared_ptr<CloudTablet>> _map;
+};
+
+// TODO(plat1ko): Prune cache
+CloudTabletMgr::CloudTabletMgr(CloudStorageEngine& engine)
+ : _engine(engine),
+ _tablet_map(std::make_unique<TabletMap>()),
+ _cache(std::make_unique<LRUCachePolicy>(
+ CachePolicy::CacheType::CLOUD_TABLET_CACHE,
config::tablet_cache_capacity,
+ LRUCacheType::NUMBER, 0, config::tablet_cache_shards)) {}
+
+CloudTabletMgr::~CloudTabletMgr() = default;
+
+Result<std::shared_ptr<CloudTablet>> CloudTabletMgr::get_tablet(int64_t
tablet_id,
+ bool
warmup_data) {
+ // LRU value type. `Value`'s lifetime MUST NOT be longer than
`CloudTabletMgr`
+ struct Value {
+ // FIXME(plat1ko): The ownership of tablet seems to belong to
'TabletMap', while `Value`
+ // only requires a reference.
+ std::shared_ptr<CloudTablet> tablet;
+ TabletMap& tablet_map;
+ };
+
+ auto tablet_id_str = std::to_string(tablet_id);
+ CacheKey key(tablet_id_str);
+ auto* cache = _cache->cache();
+ auto* handle = cache->lookup(key);
+ if (handle == nullptr) {
+ auto load_tablet = [this, cache, &key,
+ warmup_data](int64_t tablet_id) ->
std::shared_ptr<CloudTablet> {
+ TabletMetaSharedPtr tablet_meta;
+ auto st = _engine.meta_mgr().get_tablet_meta(tablet_id,
&tablet_meta);
+ if (!st.ok()) {
+ LOG(WARNING) << "failed to tablet " << tablet_id << ": " << st;
+ return nullptr;
+ }
+
+ auto tablet = std::make_shared<CloudTablet>(_engine,
std::move(tablet_meta));
+ auto value = std::make_unique<Value>(Value {
+ .tablet = tablet,
+ .tablet_map = *_tablet_map,
+ });
+ // MUST sync stats to let compaction scheduler work correctly
+ st = _engine.meta_mgr().sync_tablet_rowsets(tablet.get(),
warmup_data);
+ if (!st.ok()) {
+ LOG(WARNING) << "failed to sync tablet " << tablet_id << ": "
<< st;
+ return nullptr;
+ }
+
+ auto deleter = [](const CacheKey& key, void* value) {
+ auto* value1 = reinterpret_cast<Value*>(value);
+ // tablet has been evicted, release it from `tablet_map`
+ value1->tablet_map.erase(value1->tablet.get());
+ delete value1;
+ };
+
+ auto* handle = cache->insert(key, value.release(), 1, deleter);
+ auto ret = std::shared_ptr<CloudTablet>(
+ tablet.get(), [cache, handle](...) {
cache->release(handle); });
+ _tablet_map->put(std::move(tablet));
+ return ret;
+ };
+
+ auto tablet = s_singleflight_load_tablet.load(tablet_id,
std::move(load_tablet));
+ if (tablet == nullptr) {
+ return ResultError(Status::InternalError("failed to get tablet
{}", tablet_id));
+ }
+ return tablet;
+ }
+
+ CloudTablet* tablet_raw_ptr =
reinterpret_cast<Value*>(cache->value(handle))->tablet.get();
+ auto tablet = std::shared_ptr<CloudTablet>(tablet_raw_ptr,
+ [cache, handle](...) {
cache->release(handle); });
+ return tablet;
+}
+
+void CloudTabletMgr::erase_tablet(int64_t tablet_id) {
+ auto tablet_id_str = std::to_string(tablet_id);
+ CacheKey key(tablet_id_str.data(), tablet_id_str.size());
+ _cache->cache()->erase(key);
+}
+
+void CloudTabletMgr::vacuum_stale_rowsets() {
+ LOG_INFO("begin to vacuum stale rowsets");
+ std::vector<std::shared_ptr<CloudTablet>> tablets_to_vacuum;
+ tablets_to_vacuum.reserve(_tablet_map->size());
+ _tablet_map->traverse([&tablets_to_vacuum](auto&& t) {
+ if (t->has_stale_rowsets()) {
+ tablets_to_vacuum.push_back(t);
+ }
+ });
+ int num_vacuumed = 0;
+ for (auto& t : tablets_to_vacuum) {
+ num_vacuumed += t->delete_expired_stale_rowsets();
+ }
+ LOG_INFO("finish vacuum stale rowsets").tag("num_vacuumed", num_vacuumed);
+}
+
+std::vector<std::weak_ptr<CloudTablet>> CloudTabletMgr::get_weak_tablets() {
+ std::vector<std::weak_ptr<CloudTablet>> weak_tablets;
+ weak_tablets.reserve(_tablet_map->size());
+ _tablet_map->traverse([&weak_tablets](auto& t) {
weak_tablets.push_back(t); });
+ return weak_tablets;
+}
+
+void CloudTabletMgr::sync_tablets() {
+ LOG_INFO("begin to sync tablets");
+ int64_t last_sync_time_bound = ::time(nullptr) -
config::tablet_sync_interval_seconds;
+
+ auto weak_tablets = get_weak_tablets();
+
+ // sort by last_sync_time
+ static auto cmp = [](const auto& a, const auto& b) { return a.first <
b.first; };
+ std::multiset<std::pair<int64_t, std::weak_ptr<CloudTablet>>,
decltype(cmp)>
+ sync_time_tablet_set(cmp);
+
+ for (auto& weak_tablet : weak_tablets) {
+ if (auto tablet = weak_tablet.lock()) {
+ if (tablet->tablet_state() != TABLET_RUNNING) {
+ continue;
+ }
+ int64_t last_sync_time = tablet->last_sync_time_s;
+ if (last_sync_time <= last_sync_time_bound) {
+ sync_time_tablet_set.emplace(last_sync_time, weak_tablet);
+ }
+ }
+ }
+
+ int num_sync = 0;
+ for (auto&& [_, weak_tablet] : sync_time_tablet_set) {
+ if (auto tablet = weak_tablet.lock()) {
+ if (tablet->last_sync_time_s > last_sync_time_bound) {
+ continue;
+ }
+
+ ++num_sync;
+ auto st = tablet->sync_meta();
+ if (!st) {
+ LOG_WARNING("failed to sync tablet meta {}",
tablet->tablet_id()).error(st);
+ if (st.is<ErrorCode::NOT_FOUND>()) {
+ continue;
+ }
+ }
+
+ st = tablet->sync_rowsets(-1);
+ if (!st) {
+ LOG_WARNING("failed to sync tablet rowsets {}",
tablet->tablet_id()).error(st);
+ }
+ }
+ }
+ LOG_INFO("finish sync tablets").tag("num_sync", num_sync);
+}
+
+Status CloudTabletMgr::get_topn_tablets_to_compact(
+ int n, CompactionType compaction_type, const
std::function<bool(CloudTablet*)>& filter_out,
+ std::vector<std::shared_ptr<CloudTablet>>* tablets, int64_t*
max_score) {
+ DCHECK(compaction_type == CompactionType::BASE_COMPACTION ||
+ compaction_type == CompactionType::CUMULATIVE_COMPACTION);
+ *max_score = 0;
+ int64_t max_score_tablet_id = 0;
+ // clang-format off
+ auto score = [compaction_type](CloudTablet* t) {
+ return compaction_type == CompactionType::BASE_COMPACTION ?
t->get_cloud_base_compaction_score()
+ : compaction_type == CompactionType::CUMULATIVE_COMPACTION ?
t->get_cloud_cumu_compaction_score()
+ : 0;
+ };
+
+ using namespace std::chrono;
+ auto now =
duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count();
+ auto skip = [now, compaction_type](CloudTablet* t) {
+ if (compaction_type == CompactionType::BASE_COMPACTION) {
+ return now - t->last_base_compaction_success_time_ms <
config::base_compaction_freeze_interval_s * 1000;
+ }
+ // If tablet has too many rowsets but not be compacted for a long
time, compaction should be performed
+ // regardless of whether there is a load job recently.
+ return now - t->last_cumu_no_suitable_version_ms <
config::min_compaction_failure_interval_ms ||
+ (now - t->last_load_time_ms >
config::cu_compaction_freeze_interval_s * 1000
+ && now - t->last_cumu_compaction_success_time_ms <
config::cumu_compaction_interval_s * 1000
+ && t->fetch_add_approximate_num_rowsets(0) <
config::max_tablet_version_num / 2);
+ };
+ // We don't schedule tablets that are disabled for compaction
+ auto disable = [](CloudTablet* t) { return
t->tablet_meta()->tablet_schema()->disable_auto_compaction(); };
+
+ auto [num_filtered, num_disabled, num_skipped] = std::make_tuple(0, 0, 0);
+
+ auto weak_tablets = get_weak_tablets();
+ std::vector<std::pair<std::shared_ptr<CloudTablet>, int64_t>> buf;
+ buf.reserve(n + 1);
+ for (auto& weak_tablet : weak_tablets) {
+ auto t = weak_tablet.lock();
+ if (t == nullptr) { continue; }
+
+ int64_t s = score(t.get());
+ if (s > *max_score) {
+ max_score_tablet_id = t->tablet_id();
+ *max_score = s;
+ }
+
+ if (filter_out(t.get())) { ++num_filtered; continue; }
+ if (disable(t.get())) { ++num_disabled; continue; }
+ if (skip(t.get())) { ++num_skipped; continue; }
+
+ buf.emplace_back(std::move(t), s);
+ std::sort(buf.begin(), buf.end(), [](auto& a, auto& b) { return
a.second > b.second; });
+ if (buf.size() > n) { buf.pop_back(); }
+ }
+
+ LOG_EVERY_N(INFO, 1000) << "get_topn_compaction_score, n=" << n << "
type=" << compaction_type
+ << " num_tablets=" << weak_tablets.size() << " num_skipped=" <<
num_skipped
+ << " num_disabled=" << num_disabled << " num_filtered=" <<
num_filtered
+ << " max_score=" << *max_score << " max_score_tablet=" <<
max_score_tablet_id
+ << " tablets=[" << [&buf] { std::stringstream ss; for (auto& i
: buf) ss << i.first->tablet_id() << ":" << i.second << ","; return ss.str();
}() << "]"
+ ;
+ // clang-format on
+
+ tablets->clear();
+ tablets->reserve(n + 1);
+ for (auto& [t, _] : buf) {
+ tablets->emplace_back(std::move(t));
+ }
+
+ return Status::OK();
+}
+
+} // namespace doris
diff --git a/be/src/cloud/cloud_tablet_mgr.h b/be/src/cloud/cloud_tablet_mgr.h
new file mode 100644
index 00000000000..6e8ae2c17b0
--- /dev/null
+++ b/be/src/cloud/cloud_tablet_mgr.h
@@ -0,0 +1,75 @@
+// 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 <functional>
+#include <memory>
+#include <vector>
+
+#include "common/status.h"
+#include "olap/olap_common.h"
+
+namespace doris {
+
+class CloudTablet;
+class CloudStorageEngine;
+class LRUCachePolicy;
+
+class CloudTabletMgr {
+public:
+ CloudTabletMgr(CloudStorageEngine& engine);
+ ~CloudTabletMgr();
+
+ // If the tablet is in cache, return this tablet directly; otherwise will
get tablet meta first,
+ // sync rowsets after, and download segment data in background if
`warmup_data` is true.
+ Result<std::shared_ptr<CloudTablet>> get_tablet(int64_t tablet_id, bool
warmup_data = false);
+
+ void erase_tablet(int64_t tablet_id);
+
+ void vacuum_stale_rowsets();
+
+ // Return weak ptr of all cached tablets.
+ // We return weak ptr to avoid extend lifetime of tablets that are no
longer cached.
+ std::vector<std::weak_ptr<CloudTablet>> get_weak_tablets();
+
+ void sync_tablets();
+
+ /**
+ * Gets top N tablets that are considered to be compacted first
+ *
+ * @param n max number of tablets to get, all of them are comapction
enabled
+ * @param filter_out a filter takes a tablet and return bool to check
+ * whether skipping the tablet, true for skip
+ * @param tablets output param
+ * @param max_score output param, max score of existed tablets
+ * @return status of this call
+ */
+ Status get_topn_tablets_to_compact(int n, CompactionType compaction_type,
+ const
std::function<bool(CloudTablet*)>& filter_out,
+
std::vector<std::shared_ptr<CloudTablet>>* tablets,
+ int64_t* max_score);
+
+private:
+ CloudStorageEngine& _engine;
+
+ class TabletMap;
+ std::unique_ptr<TabletMap> _tablet_map;
+ std::unique_ptr<LRUCachePolicy> _cache;
+};
+
+} // namespace doris
diff --git a/be/src/cloud/config.cpp b/be/src/cloud/config.cpp
index d7513574037..b222ec9d517 100644
--- a/be/src/cloud/config.cpp
+++ b/be/src/cloud/config.cpp
@@ -30,4 +30,13 @@ DEFINE_mInt32(meta_service_idle_connection_timeout_ms, "0");
DEFINE_mInt32(meta_service_rpc_retry_times, "200");
DEFINE_mInt32(meta_service_brpc_timeout_ms, "10000");
+DEFINE_Int64(tablet_cache_capacity, "100000");
+DEFINE_Int64(tablet_cache_shards, "16");
+DEFINE_mInt64(tablet_sync_interval_seconds, "1800");
+
+DEFINE_mInt64(min_compaction_failure_interval_ms, "5000");
+DEFINE_mInt64(base_compaction_freeze_interval_s, "86400");
+DEFINE_mInt64(cu_compaction_freeze_interval_s, "1200");
+DEFINE_mInt64(cumu_compaction_interval_s, "1800");
+
} // namespace doris::config
diff --git a/be/src/cloud/config.h b/be/src/cloud/config.h
index 0a2ceab3e5a..ccb7b834f9d 100644
--- a/be/src/cloud/config.h
+++ b/be/src/cloud/config.h
@@ -41,4 +41,16 @@ DECLARE_mInt32(meta_service_rpc_retry_times);
// default brpc timeout
DECLARE_mInt32(meta_service_brpc_timeout_ms);
+// CloudTabletMgr config
+DECLARE_Int64(tablet_cache_capacity);
+DECLARE_Int64(tablet_cache_shards);
+DECLARE_mInt64(tablet_sync_interval_seconds);
+
+// Cloud compaction config
+DECLARE_mInt64(min_compaction_failure_interval_ms);
+// For cloud read/write seperate mode
+DECLARE_mInt64(base_compaction_freeze_interval_s);
+DECLARE_mInt64(cu_compaction_freeze_interval_s);
+DECLARE_mInt64(cumu_compaction_interval_s);
+
} // namespace doris::config
diff --git a/be/src/runtime/memory/cache_policy.h
b/be/src/runtime/memory/cache_policy.h
index 9a9f2c36e84..c19066b0be2 100644
--- a/be/src/runtime/memory/cache_policy.h
+++ b/be/src/runtime/memory/cache_policy.h
@@ -42,7 +42,8 @@ public:
COMMON_OBJ_LRU_CACHE = 12,
FOR_UT = 13,
TABLET_SCHEMA_CACHE = 14,
- CREATE_TABLET_RR_IDX_CACHE = 15
+ CREATE_TABLET_RR_IDX_CACHE = 15,
+ CLOUD_TABLET_CACHE = 16,
};
static std::string type_string(CacheType type) {
@@ -79,6 +80,8 @@ public:
return "TabletSchemaCache";
case CacheType::CREATE_TABLET_RR_IDX_CACHE:
return "CreateTabletRRIdxCache";
+ case CacheType::CLOUD_TABLET_CACHE:
+ return "CloudTabletCache";
default:
LOG(FATAL) << "not match type of cache policy :" <<
static_cast<int>(type);
}
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