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435
src/rootserver/ob_global_max_decided_trans_version_mgr.cpp
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435
src/rootserver/ob_global_max_decided_trans_version_mgr.cpp
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/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX RS
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#include "ob_global_max_decided_trans_version_mgr.h"
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#include "common/ob_clock_generator.h"
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#include "observer/ob_server_struct.h"
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#include "share/ob_cluster_version.h"
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#include "share/ob_multi_cluster_util.h"
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#include "share/ob_srv_rpc_proxy.h"
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#include "share/partition_table/ob_partition_table_operator.h"
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#include "share/partition_table/ob_partition_info.h"
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#include "share/partition_table/ob_partition_table_iterator.h"
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namespace oceanbase {
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using namespace common;
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using namespace share;
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using namespace share::schema;
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namespace rootserver {
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ObGlobalMaxDecidedTransVersionMgr::ObGlobalMaxDecidedTransVersionMgr()
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: is_inited_(false),
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rpc_proxy_(NULL),
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pt_operator_(NULL),
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schema_service_(NULL),
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self_addr_(),
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global_max_decided_trans_version_(OB_INVALID_TIMESTAMP),
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start_ts_(OB_INVALID_TIMESTAMP),
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contributor_pkey_()
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{}
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ObGlobalMaxDecidedTransVersionMgr::~ObGlobalMaxDecidedTransVersionMgr()
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{
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if (is_inited_) {
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stop();
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wait();
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}
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}
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class ObGlobalMaxDecidedTransVersionMgr::InsertPartitionFunctor {
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public:
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explicit InsertPartitionFunctor(const common::ObPartitionKey& partition_key)
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: partition_key_(partition_key), ret_value_(common::OB_SUCCESS)
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{}
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~InsertPartitionFunctor()
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{}
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public:
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bool operator()(const common::ObAddr& leader, common::ObPartitionArray& partition_array)
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{
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if (OB_SUCCESS != (ret_value_ = partition_array.push_back(partition_key_))) {
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LOG_WARN("partition_array push_back failed", K(ret_value_), K(partition_key_), K(leader));
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}
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return common::OB_SUCCESS == ret_value_;
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}
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int get_ret_value() const
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{
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return ret_value_;
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}
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private:
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common::ObPartitionKey partition_key_;
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int ret_value_;
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private:
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DISALLOW_COPY_AND_ASSIGN(InsertPartitionFunctor);
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};
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class ObGlobalMaxDecidedTransVersionMgr::QueryPartitionFunctor {
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public:
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QueryPartitionFunctor(obrpc::ObSrvRpcProxy* rpc_proxy, const int64_t version)
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: saved_value_array_(),
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ret_value_(common::OB_SUCCESS),
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rpc_proxy_(rpc_proxy),
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last_max_decided_trans_version_(version)
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{}
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~QueryPartitionFunctor()
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{}
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public:
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bool operator()(const common::ObAddr& leader, common::ObPartitionArray& partition_array)
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{
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if (OB_SUCCESS != (ret_value_ = handle_partition_array_(leader, partition_array))) {
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LOG_WARN("handle_partition_array_ failed",
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K(ret_value_),
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K(leader),
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K(partition_array),
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K_(last_max_decided_trans_version));
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}
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return common::OB_SUCCESS == ret_value_;
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}
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int get_ret_value() const
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{
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return ret_value_;
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}
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int get_min(common::ObPartitionKey& pkey, int64_t& value) const;
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private:
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class PartitionValue {
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public:
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PartitionValue(const common::ObPartitionKey& pkey, const int64_t value) : pkey_(pkey), value_(value)
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{}
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PartitionValue() : pkey_(), value_(0)
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{}
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~PartitionValue()
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{}
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TO_STRING_KV(K_(pkey), K_(value));
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public:
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common::ObPartitionKey pkey_;
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int64_t value_;
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};
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private:
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int handle_partition_array_(const common::ObAddr& leader, const common::ObPartitionArray& partition_array);
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common::ObSEArray<PartitionValue, 16> saved_value_array_;
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int ret_value_;
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obrpc::ObSrvRpcProxy* rpc_proxy_;
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int64_t last_max_decided_trans_version_;
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private:
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DISALLOW_COPY_AND_ASSIGN(QueryPartitionFunctor);
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};
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int ObGlobalMaxDecidedTransVersionMgr::init(obrpc::ObSrvRpcProxy* rpc_proxy,
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share::ObPartitionTableOperator* pt_operator, share::schema::ObMultiVersionSchemaService* schema_service,
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const common::ObAddr& self_addr)
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{
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int ret = OB_SUCCESS;
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static const int64_t global_max_decided_trans_version_thread_cnt = 1;
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if (is_inited_) {
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ret = OB_INIT_TWICE;
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LOG_WARN("init twice", K(ret));
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} else if (OB_ISNULL(rpc_proxy) || OB_ISNULL(pt_operator) || OB_ISNULL(schema_service) || !self_addr.is_valid()) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid arguments", K(ret), KP(rpc_proxy), KP(pt_operator), KP(schema_service), K(self_addr));
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} else if (OB_FAIL(create(global_max_decided_trans_version_thread_cnt, "GMDTVerMgr"))) {
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LOG_WARN("create global_max_decided_trans_version thread failed",
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K(ret),
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K(global_max_decided_trans_version_thread_cnt));
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} else {
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rpc_proxy_ = rpc_proxy;
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pt_operator_ = pt_operator;
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schema_service_ = schema_service;
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self_addr_ = self_addr;
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global_max_decided_trans_version_ = 0;
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start_ts_ = 0;
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is_inited_ = true;
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}
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LOG_INFO("ObGlobalMaxDecidedTransVersionMgr is inited", K(ret));
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return ret;
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}
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void ObGlobalMaxDecidedTransVersionMgr::run3()
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{
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int ret = OB_SUCCESS;
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if (IS_NOT_INIT) {
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ret = OB_NOT_INIT;
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LOG_ERROR("not init", K(ret));
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} else {
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LOG_INFO("ObGlobalMaxDecidedTransVersionMgr start");
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while (!stop_) {
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if (!cluster_version_before_2000_() && GCONF.enable_one_phase_commit) {
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const int64_t begin_ts = ObClockGenerator::getClock();
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ServerPartitionMap server_partition_map;
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if (OB_FAIL(server_partition_map.init(ObModIds::OB_HASH_BUCKET_SERVER_PARTITION_MAP))) {
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LOG_WARN("server_partition_map init failed", K(ret));
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} else if (OB_FAIL(construct_server_partition_map_(server_partition_map))) {
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LOG_WARN("construct_server_partition_map_ failed", K(ret));
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} else if (OB_FAIL(handle_each_partition_(server_partition_map))) {
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LOG_WARN("handle_each_partition_ failed", K(ret));
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}
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const int64_t cost_ts = ObClockGenerator::getClock() - begin_ts;
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LOG_INFO("ObGlobalMaxDecidedTransVersionMgr run once",
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K(ret),
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K(cost_ts),
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K(global_max_decided_trans_version_),
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K_(contributor_pkey));
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// Obtaining global_max_decided_trans_version_ for the first time after RS starts may fail,
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// In this scenario, if global_max_decided_trans_version_ is used to determine the delay, it will cause a false
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// alarm. Therefore, in this scenario, we use start_ts to determine whether to report delay ERROR
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const int64_t tmp_ts = (global_max_decided_trans_version_ != 0) ? global_max_decided_trans_version_ : start_ts_;
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const int64_t delay_err_threshold =
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(GCTX.is_primary_cluster() ? DELAY_ERROR_THRESHOLD : STANDBY_DELAY_ERROR_THRESHOLD);
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if (ObClockGenerator::getClock() - tmp_ts >= delay_err_threshold && GCONF.enable_one_phase_commit) {
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// one-phase commit open and lag behind too much, alarm
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LOG_ERROR("global_max_decided_trans_version_ delay too long, please attention!",
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K(delay_err_threshold),
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K(global_max_decided_trans_version_),
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K_(contributor_pkey));
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}
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}
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{
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ObThreadCondGuard guard(get_cond());
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if (!stop_) {
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if (OB_SUCC(ret)) {
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get_cond().wait(SUCCESS_INTERVAL_MS);
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} else {
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get_cond().wait(FAIL_INTERVAL_MS);
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}
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}
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}
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}
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LOG_INFO("ObGlobalMaxDecidedTransVersionMgr stop");
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}
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}
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int ObGlobalMaxDecidedTransVersionMgr::get_global_max_decided_trans_version(int64_t& trans_version) const
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{
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int ret = OB_SUCCESS;
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if (IS_NOT_INIT) {
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ret = OB_NOT_INIT;
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LOG_WARN("ObGlobalMaxDecidedTransVersionMgr is not inited", K(ret));
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} else {
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trans_version = global_max_decided_trans_version_;
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}
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return ret;
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}
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int ObGlobalMaxDecidedTransVersionMgr::construct_server_partition_map_(ServerPartitionMap& server_partition_map) const
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{
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int ret = OB_SUCCESS;
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ObPartitionInfo partition_info;
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ObPartitionTableIterator pt_iter;
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ObAddr leader;
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ObPartitionKey partition_key;
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const bool ignore_row_checksum = false;
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if (OB_FAIL(pt_iter.init(*pt_operator_, *schema_service_, ignore_row_checksum))) {
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LOG_WARN("partition table iterator init failed", K(ret));
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} else {
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while (OB_SUCC(ret) && OB_SUCC(pt_iter.next(partition_info))) {
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bool is_restore = false;
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if (OB_FAIL(get_leader_addr_and_restore_state_(partition_info, leader, is_restore, partition_key))) {
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LOG_WARN("get_leader_server_ failed", K(ret), K(partition_key));
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} else if (is_restore) {
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// just skip restore partition
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} else if (OB_FAIL(construct_server_partition_map_(server_partition_map, leader, partition_key))) {
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LOG_WARN("construct_server_partition_map_ failed", K(ret), K(leader), K(partition_key));
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}
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}
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if (OB_ITER_END != ret) {
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LOG_WARN("fail to get next partition_info", K(ret));
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} else {
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ret = OB_SUCCESS;
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}
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}
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return ret;
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}
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int ObGlobalMaxDecidedTransVersionMgr::get_leader_addr_and_restore_state_(const share::ObPartitionInfo& partition_info,
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common::ObAddr& leader, bool& is_restore, common::ObPartitionKey& partition_key) const
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{
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int ret = OB_SUCCESS;
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is_restore = false;
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if (!partition_info.is_valid()) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid arguments", K(ret), K(partition_info));
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} else {
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bool found = false;
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for (int64_t index = 0; !found && index < partition_info.replica_count(); index++) {
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const ObPartitionReplica& replica = partition_info.get_replicas_v2().at(index);
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if (replica.is_leader_by_election()) {
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leader = replica.server_;
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partition_key = common::ObPartitionKey(replica.table_id_, replica.partition_id_, replica.partition_cnt_);
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found = true;
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} else if (replica.is_restore_leader()) {
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is_restore = true;
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found = true;
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partition_key = common::ObPartitionKey(replica.table_id_, replica.partition_id_, replica.partition_cnt_);
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}
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}
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if (!found) {
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ret = OB_ENTRY_NOT_EXIST;
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LOG_WARN("partition leader not exist", K(ret), K(partition_info));
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}
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}
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return ret;
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}
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int ObGlobalMaxDecidedTransVersionMgr::construct_server_partition_map_(ServerPartitionMap& server_partition_map,
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const common::ObAddr& leader, const common::ObPartitionKey& partition_key) const
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{
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int ret = OB_SUCCESS;
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common::ObPartitionArray tmp_partition_array;
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if (!leader.is_valid() || !partition_key.is_valid()) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid arguments", K(ret), K(partition_key), K(leader));
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} else if (OB_FAIL(server_partition_map.get(leader, tmp_partition_array)) && OB_ENTRY_NOT_EXIST != ret) {
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LOG_WARN("server_partition_map get failed", K(ret), K(partition_key), K(leader));
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} else {
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if (OB_ENTRY_NOT_EXIST == ret) {
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if (OB_FAIL(server_partition_map.insert(leader, tmp_partition_array))) {
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LOG_WARN("server_partition_map insert failed", K(ret), K(partition_key), K(leader));
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}
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}
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if (OB_SUCCESS == ret) {
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InsertPartitionFunctor functor(partition_key);
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if (OB_SUCCESS != server_partition_map.operate(leader, functor)) {
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ret = functor.get_ret_value();
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LOG_WARN("insert partition functor operate failed", K(ret), K(partition_key), K(leader));
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}
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}
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}
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return ret;
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}
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int ObGlobalMaxDecidedTransVersionMgr::handle_each_partition_(ServerPartitionMap& server_partition_map)
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{
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int ret = OB_SUCCESS;
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int64_t min_value = 0;
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ObPartitionKey pkey;
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QueryPartitionFunctor functor(rpc_proxy_, global_max_decided_trans_version_);
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if (0 == server_partition_map.count()) {
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ret = OB_INVALID_ARGUMENT;
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} else if (OB_SUCCESS != server_partition_map.for_each(functor)) {
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ret = functor.get_ret_value();
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LOG_WARN("for_each partition failed", K(ret));
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} else {
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(void)functor.get_min(pkey, min_value);
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if (min_value < global_max_decided_trans_version_) {
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ret = OB_ERR_UNEXPECTED;
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LOG_ERROR("global_max_decided_trans_version_ change smaller, unexpected",
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K(ret),
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K(global_max_decided_trans_version_),
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K_(contributor_pkey),
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K(min_value),
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K(pkey));
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} else {
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global_max_decided_trans_version_ = min_value;
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contributor_pkey_ = pkey;
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}
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}
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return ret;
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}
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int ObGlobalMaxDecidedTransVersionMgr::QueryPartitionFunctor::handle_partition_array_(
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const common::ObAddr& leader, const common::ObPartitionArray& partition_array)
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{
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int ret = OB_SUCCESS;
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const int64_t TIMEOUT = 1000 * 1000; // 1s
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const int64_t MAX_PARTITION_CNT = 10000;
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obrpc::ObQueryMaxDecidedTransVersionRequest request;
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obrpc::ObQueryMaxDecidedTransVersionResponse result;
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for (int64_t index = 0; OB_SUCC(ret) && index < partition_array.count(); index++) {
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if (OB_FAIL(request.partition_array_.push_back(partition_array[index]))) {
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LOG_WARN("request partition_array push_back failed", K(ret), K(leader));
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}
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if (OB_SUCC(ret) && ((index + 1) % MAX_PARTITION_CNT == 0 || index == partition_array.count() - 1)) {
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request.last_max_decided_trans_version_ = last_max_decided_trans_version_;
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if (OB_FAIL(rpc_proxy_->to(leader).timeout(TIMEOUT).query_max_decided_trans_version(request, result)) ||
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(OB_SUCCESS != (ret = result.ret_value_))) {
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LOG_WARN("rpc query_max_decided_trans_version failed", K(ret), K(leader));
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} else if (OB_FAIL(saved_value_array_.push_back(PartitionValue(result.pkey_, result.trans_version_)))) {
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LOG_WARN("saved_value_array_ push_back failed", K(ret));
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} else {
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request.reset();
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result.reset();
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}
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}
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}
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return ret;
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}
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int ObGlobalMaxDecidedTransVersionMgr::QueryPartitionFunctor::get_min(ObPartitionKey& pkey, int64_t& value) const
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{
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int64_t tmp_value = INT64_MAX;
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ObPartitionKey tmp_pkey;
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for (int64_t index = 0; index < saved_value_array_.count(); index++) {
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if (saved_value_array_.at(index).value_ < tmp_value) {
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tmp_value = saved_value_array_.at(index).value_;
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tmp_pkey = saved_value_array_.at(index).pkey_;
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}
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}
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pkey = tmp_pkey;
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value = tmp_value;
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return OB_SUCCESS;
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}
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int ObGlobalMaxDecidedTransVersionMgr::start()
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{
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int ret = OB_SUCCESS;
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start_ts_ = ObClockGenerator::getClock();
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ret = ObRsReentrantThread::start();
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return ret;
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}
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void ObGlobalMaxDecidedTransVersionMgr::stop()
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{
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ObRsReentrantThread::stop();
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}
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void ObGlobalMaxDecidedTransVersionMgr::wait()
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{
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ObRsReentrantThread::wait();
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// This thread may be started repeatedly (RS switch), so it is necessary to reset the state after a start and stop,
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// and reset global_max_decided_trans_version_ to 0
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global_max_decided_trans_version_ = 0;
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contributor_pkey_.reset();
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start_ts_ = 0;
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}
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bool ObGlobalMaxDecidedTransVersionMgr::cluster_version_before_2000_() const
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{
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return GET_MIN_CLUSTER_VERSION() < CLUSTER_VERSION_2000;
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}
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} // namespace rootserver
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} // namespace oceanbase
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