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首页MySQL 5.6 教程与NDB集群指南
"MySQL 5.6 Reference Manual 包含了 MySQL NDB Cluster 7.3-7.4 参考指南。"
MySQL 5.6 是一个广泛使用的开源关系型数据库管理系统,它提供了多种功能和优化,以满足高性能、高可用性的需求。此参考手册详细记录了从 5.6.0 到 5.6.40 的所有版本,同时也涵盖了基于 NDB 版本7.3和7.4的NDB Cluster,具体版本包括5.6.39-ndb-7.3.21 和 5.6.39-ndb-7.4.20。NDB Cluster 是 MySQL 的一种分布式存储引擎,提供了数据复制和容错能力,适合需要高可用性和扩展性的应用。
手册中包含了 MySQL 5.6 的一系列特性,例如:
1. InnoDB 存储引擎增强:MySQL 5.6 引入了更好的 InnoDB 性能,包括更快的索引创建、更高效的缓冲池管理以及更高的并发性能。
2. 全文搜索支持:MySQL 5.6 提供了内置的全文索引和搜索功能,使得在数据库中进行复杂文本查询变得更加容易。
3. 分区增强:在 5.6 版本中,表分区功能得到增强,支持更多的分区类型和更灵活的分区策略,提高了大数据处理的能力。
4. 交易隔离级别提升:提供了可重复读(Repeatable Read)的事务隔离级别,增强了多用户并发操作的准确性。
5. 并行复制:MySQL 5.6 引入了半同步复制(Semi-Synchronous Replication),确保至少有一个从库接收到主库的事务提交后,主库才返回成功确认。
6. 性能分析工具:MySQL 5.6 引入了性能_schema,提供了一套完整的监控和性能分析工具,帮助管理员识别和优化系统瓶颈。
7. SQL 性能改进:通过查询优化器的改进,包括新的统计信息和查询执行计划,提高了 SQL 查询的执行效率。
然而,需要注意的是,手册中描述的一些特性可能不包含在所有版本的 MySQL 5.6 中,具体包含哪些特性取决于你的许可证协议。如果你对所购买版本的特性有疑问,应参考你的许可证协议或联系 Oracle 销售代表。
对于每个发行版的具体改动,你可以查阅 MySQL 5.6 Release Notes,其中详细列出了每次更新的改进和修复的问题。
在遇到使用问题时,可以通过访问 MySQL 论坛或邮件列表寻求帮助,与其他 MySQL 用户交流讨论。此外,MySQL 文档库提供了更多的产品文档,包括其他语言的翻译版本以及不同格式的下载选项,如 HTML 和 PDF。
MySQL 5.6 Reference Manual 是一个全面的参考资料,无论你是开发者、DBA 还是系统管理员,都能从中获取你需要的关于 MySQL 5.6 和 NDB Cluster 的详细信息。
MySQL 5.6 Reference Manual
xvi
14.15.6 InnoDB INFORMATION_SCHEMA Metrics Table ............................................... 2153
14.16 InnoDB Integration with MySQL Performance Schema .................................................. 2161
14.16.1 Monitoring InnoDB Mutex Waits Using Performance Schema .............................. 2163
14.17 InnoDB Monitors ......................................................................................................... 2167
14.17.1 InnoDB Monitor Types ...................................................................................... 2167
14.17.2 Enabling InnoDB Monitors ................................................................................ 2168
14.17.3 InnoDB Standard Monitor and Lock Monitor Output ............................................ 2170
14.17.4 InnoDB Tablespace Monitor Output ................................................................... 2176
14.17.5 InnoDB Table Monitor Output ............................................................................ 2178
14.18 InnoDB Backup and Recovery ..................................................................................... 2182
14.18.1 InnoDB Backup ................................................................................................ 2182
14.18.2 InnoDB Recovery ............................................................................................. 2183
14.19 InnoDB and MySQL Replication ................................................................................... 2185
14.20 InnoDB memcached Plugin .......................................................................................... 2187
14.20.1 Benefits of the InnoDB memcached Plugin ........................................................ 2187
14.20.2 InnoDB memcached Architecture ...................................................................... 2188
14.20.3 Setting Up the InnoDB memcached Plugin ........................................................ 2192
14.20.4 Security Considerations for the InnoDB memcached Plugin ................................ 2198
14.20.5 Writing Applications for the InnoDB memcached Plugin ...................................... 2200
14.20.6 The InnoDB memcached Plugin and Replication ................................................ 2213
14.20.7 InnoDB memcached Plugin Internals ................................................................. 2217
14.20.8 Troubleshooting the InnoDB memcached Plugin ................................................ 2221
14.21 InnoDB Troubleshooting .............................................................................................. 2223
14.21.1 Troubleshooting InnoDB I/O Problems ............................................................... 2224
14.21.2 Forcing InnoDB Recovery ................................................................................. 2225
14.21.3 Troubleshooting InnoDB Data Dictionary Operations .......................................... 2226
14.21.4 InnoDB Error Handling ...................................................................................... 2230
15 Alternative Storage Engines ..................................................................................................... 2231
15.1 Setting the Storage Engine ............................................................................................ 2235
15.2 The MyISAM Storage Engine ........................................................................................ 2236
15.2.1 MyISAM Startup Options .................................................................................... 2238
15.2.2 Space Needed for Keys ..................................................................................... 2240
15.2.3 MyISAM Table Storage Formats ......................................................................... 2240
15.2.4 MyISAM Table Problems .................................................................................... 2243
15.3 The MEMORY Storage Engine ...................................................................................... 2244
15.4 The CSV Storage Engine .............................................................................................. 2249
15.4.1 Repairing and Checking CSV Tables .................................................................. 2249
15.4.2 CSV Limitations ................................................................................................. 2250
15.5 The ARCHIVE Storage Engine ...................................................................................... 2250
15.6 The BLACKHOLE Storage Engine ................................................................................. 2252
15.7 The MERGE Storage Engine ......................................................................................... 2254
15.7.1 MERGE Table Advantages and Disadvantages .................................................... 2257
15.7.2 MERGE Table Problems ..................................................................................... 2258
15.8 The FEDERATED Storage Engine ................................................................................. 2260
15.8.1 FEDERATED Storage Engine Overview .............................................................. 2260
15.8.2 How to Create FEDERATED Tables ................................................................... 2261
15.8.3 FEDERATED Storage Engine Notes and Tips ..................................................... 2264
15.8.4 FEDERATED Storage Engine Resources ............................................................ 2265
15.9 The EXAMPLE Storage Engine ..................................................................................... 2265
15.10 Other Storage Engines ................................................................................................ 2266
15.11 Overview of MySQL Storage Engine Architecture ......................................................... 2266
15.11.1 Pluggable Storage Engine Architecture .............................................................. 2266
15.11.2 The Common Database Server Layer ................................................................ 2267
16 High Availability and Scalability ................................................................................................ 2269
MySQL 5.6 Reference Manual
xvii
16.1 Using ZFS Replication ................................................................................................... 2271
16.1.1 Using ZFS for File System Replication ................................................................ 2272
16.1.2 Configuring MySQL for ZFS Replication .............................................................. 2273
16.1.3 Handling MySQL Recovery with ZFS .................................................................. 2274
16.2 Using MySQL with memcached ..................................................................................... 2274
16.2.1 Installing memcached ......................................................................................... 2276
16.2.2 Using memcached .............................................................................................. 2277
16.2.3 Developing a memcached Application ................................................................. 2297
16.2.4 Getting memcached Statistics ............................................................................. 2323
16.2.5 memcached FAQ ............................................................................................... 2332
17 Replication ............................................................................................................................... 2335
17.1 Replication Configuration ............................................................................................... 2336
17.1.1 How to Set Up Replication .................................................................................. 2337
17.1.2 Replication Formats ............................................................................................ 2347
17.1.3 Replication with Global Transaction Identifiers ..................................................... 2354
17.1.4 Replication and Binary Logging Options and Variables ......................................... 2363
17.1.5 Common Replication Administration Tasks .......................................................... 2447
17.2 Replication Implementation ............................................................................................ 2450
17.2.1 Replication Implementation Details ...................................................................... 2450
17.2.2 Replication Relay and Status Logs ...................................................................... 2452
17.2.3 How Servers Evaluate Replication Filtering Rules ................................................ 2459
17.3 Replication Solutions ..................................................................................................... 2467
17.3.1 Using Replication for Backups ............................................................................ 2467
17.3.2 Handling an Unexpected Halt of a Replication Slave ............................................ 2471
17.3.3 Using Replication with Different Master and Slave Storage Engines ...................... 2473
17.3.4 Using Replication for Scale-Out .......................................................................... 2474
17.3.5 Replicating Different Databases to Different Slaves .............................................. 2476
17.3.6 Improving Replication Performance ..................................................................... 2477
17.3.7 Switching Masters During Failover ...................................................................... 2478
17.3.8 Setting Up Replication to Use Encrypted Connections .......................................... 2480
17.3.9 Semisynchronous Replication ............................................................................. 2482
17.3.10 Delayed Replication .......................................................................................... 2487
17.4 Replication Notes and Tips ............................................................................................ 2488
17.4.1 Replication Features and Issues ......................................................................... 2488
17.4.2 Replication Compatibility Between MySQL Versions ............................................. 2515
17.4.3 Upgrading a Replication Setup ............................................................................ 2516
17.4.4 Troubleshooting Replication ................................................................................ 2517
17.4.5 How to Report Replication Bugs or Problems ...................................................... 2518
18 MySQL NDB Cluster 7.3 and NDB Cluster 7.4 .......................................................................... 2521
18.1 NDB Cluster Overview .................................................................................................. 2525
18.1.1 NDB Cluster Core Concepts ............................................................................... 2526
18.1.2 NDB Cluster Nodes, Node Groups, Replicas, and Partitions ................................. 2529
18.1.3 NDB Cluster Hardware, Software, and Networking Requirements .......................... 2532
18.1.4 What is New in MySQL NDB Cluster ................................................................... 2533
18.1.5 MySQL Server Using InnoDB Compared with NDB Cluster ................................... 2537
18.1.6 Known Limitations of NDB Cluster ...................................................................... 2540
18.2 NDB Cluster Installation ................................................................................................ 2551
18.2.1 The NDB Cluster Auto-Installer ........................................................................... 2553
18.2.2 Installation of NDB Cluster on Linux .................................................................... 2569
18.2.3 Installing NDB Cluster on Windows ..................................................................... 2576
18.2.4 Initial Configuration of NDB Cluster ..................................................................... 2585
18.2.5 Initial Startup of NDB Cluster .............................................................................. 2587
18.2.6 NDB Cluster Example with Tables and Data ........................................................ 2588
18.2.7 Safe Shutdown and Restart of NDB Cluster ......................................................... 2591
MySQL 5.6 Reference Manual
xviii
18.2.8 Upgrading and Downgrading NDB Cluster ........................................................... 2592
18.3 Configuration of NDB Cluster ......................................................................................... 2595
18.3.1 Quick Test Setup of NDB Cluster ........................................................................ 2595
18.3.2 Overview of NDB Cluster Configuration Parameters, Options, and Variables .......... 2598
18.3.3 NDB Cluster Configuration Files .......................................................................... 2629
18.3.4 Using High-Speed Interconnects with NDB Cluster ............................................... 2773
18.4 NDB Cluster Programs .................................................................................................. 2774
18.4.1 ndbd — The NDB Cluster Data Node Daemon .................................................... 2774
18.4.2 ndbinfo_select_all — Select From ndbinfo Tables ....................................... 2781
18.4.3 ndbmtd — The NDB Cluster Data Node Daemon (Multi-Threaded) ....................... 2783
18.4.4 ndb_mgmd — The NDB Cluster Management Server Daemon .............................. 2784
18.4.5 ndb_mgm — The NDB Cluster Management Client ............................................... 2792
18.4.6 ndb_blob_tool — Check and Repair BLOB and TEXT columns of NDB Cluster
Tables .......................................................................................................................... 2794
18.4.7 ndb_config — Extract NDB Cluster Configuration Information ............................ 2796
18.4.8 ndb_cpcd — Automate Testing for NDB Development ........................................ 2805
18.4.9 ndb_delete_all — Delete All Rows from an NDB Table ................................... 2805
18.4.10 ndb_desc — Describe NDB Tables .................................................................. 2806
18.4.11 ndb_drop_index — Drop Index from an NDB Table ........................................ 2810
18.4.12 ndb_drop_table — Drop an NDB Table ......................................................... 2812
18.4.13 ndb_error_reporter — NDB Error-Reporting Utility ...................................... 2812
18.4.14 ndb_index_stat — NDB Index Statistics Utility .............................................. 2814
18.4.15 ndb_move_data — NDB Data Copy Utility ....................................................... 2819
18.4.16 ndb_print_backup_file — Print NDB Backup File Contents ......................... 2821
18.4.17 ndb_print_file — Print NDB Disk Data File Contents ................................... 2822
18.4.18 ndb_print_frag_file — Print NDB Fragment List File Contents .................... 2822
18.4.19 ndb_print_schema_file — Print NDB Schema File Contents ........................ 2823
18.4.20 ndb_print_sys_file — Print NDB System File Contents ............................... 2824
18.4.21 ndb_redo_log_reader — Check and Print Content of Cluster Redo Log .......... 2824
18.4.22 ndb_restore — Restore an NDB Cluster Backup ............................................ 2827
18.4.23 ndb_select_all — Print Rows from an NDB Table ........................................ 2847
18.4.24 ndb_select_count — Print Row Counts for NDB Tables ................................ 2851
18.4.25 ndb_setup.py — Start browser-based Auto-Installer for NDB Cluster ................ 2851
18.4.26 ndb_show_tables — Display List of NDB Tables ............................................ 2854
18.4.27 ndb_size.pl — NDBCLUSTER Size Requirement Estimator ........................... 2856
18.4.28 ndb_waiter — Wait for NDB Cluster to Reach a Given Status .......................... 2859
18.4.29 Options Common to NDB Cluster Programs — Options Common to NDB Cluster
Programs ...................................................................................................................... 2861
18.5 Management of NDB Cluster ......................................................................................... 2866
18.5.1 Summary of NDB Cluster Start Phases ............................................................... 2867
18.5.2 Commands in the NDB Cluster Management Client ............................................. 2869
18.5.3 Online Backup of NDB Cluster ............................................................................ 2873
18.5.4 MySQL Server Usage for NDB Cluster ................................................................ 2878
18.5.5 Performing a Rolling Restart of an NDB Cluster ................................................... 2879
18.5.6 Event Reports Generated in NDB Cluster ............................................................ 2882
18.5.7 NDB Cluster Log Messages ................................................................................ 2893
18.5.8 NDB Cluster Single User Mode ........................................................................... 2908
18.5.9 Quick Reference: NDB Cluster SQL Statements .................................................. 2909
18.5.10 ndbinfo: The NDB Cluster Information Database ................................................ 2911
18.5.11 NDB Cluster Security Issues ............................................................................. 2947
18.5.12 NDB Cluster Disk Data Tables .......................................................................... 2954
18.5.13 Adding NDB Cluster Data Nodes Online ............................................................ 2962
18.5.14 Distributed MySQL Privileges for NDB Cluster ................................................... 2973
18.5.15 NDB API Statistics Counters and Variables ........................................................ 2976
MySQL 5.6 Reference Manual
xix
18.6 NDB Cluster Replication ................................................................................................ 2989
18.6.1 NDB Cluster Replication: Abbreviations and Symbols ........................................... 2990
18.6.2 General Requirements for NDB Cluster Replication .............................................. 2990
18.6.3 Known Issues in NDB Cluster Replication ............................................................ 2991
18.6.4 NDB Cluster Replication Schema and Tables ...................................................... 2998
18.6.5 Preparing the NDB Cluster for Replication ........................................................... 3002
18.6.6 Starting NDB Cluster Replication (Single Replication Channel) .............................. 3003
18.6.7 Using Two Replication Channels for NDB Cluster Replication ............................... 3005
18.6.8 Implementing Failover with NDB Cluster Replication ............................................ 3006
18.6.9 NDB Cluster Backups With NDB Cluster Replication ............................................ 3008
18.6.10 NDB Cluster Replication: Multi-Master and Circular Replication ........................... 3014
18.6.11 NDB Cluster Replication Conflict Resolution ...................................................... 3018
18.7 NDB Cluster Release Notes .......................................................................................... 3033
19 Partitioning .............................................................................................................................. 3035
19.1 Overview of Partitioning in MySQL ................................................................................. 3037
19.2 Partitioning Types ......................................................................................................... 3040
19.2.1 RANGE Partitioning ............................................................................................ 3042
19.2.2 LIST Partitioning ................................................................................................. 3046
19.2.3 COLUMNS Partitioning ....................................................................................... 3048
19.2.4 HASH Partitioning .............................................................................................. 3057
19.2.5 KEY Partitioning ................................................................................................. 3060
19.2.6 Subpartitioning ................................................................................................... 3062
19.2.7 How MySQL Partitioning Handles NULL .............................................................. 3065
19.3 Partition Management ................................................................................................... 3070
19.3.1 Management of RANGE and LIST Partitions ........................................................ 3071
19.3.2 Management of HASH and KEY Partitions .......................................................... 3077
19.3.3 Exchanging Partitions and Subpartitions with Tables ............................................ 3078
19.3.4 Maintenance of Partitions ................................................................................... 3083
19.3.5 Obtaining Information About Partitions ................................................................. 3085
19.4 Partition Pruning ........................................................................................................... 3087
19.5 Partition Selection ......................................................................................................... 3090
19.6 Restrictions and Limitations on Partitioning ..................................................................... 3096
19.6.1 Partitioning Keys, Primary Keys, and Unique Keys ............................................... 3103
19.6.2 Partitioning Limitations Relating to Storage Engines ............................................. 3107
19.6.3 Partitioning Limitations Relating to Functions ....................................................... 3108
19.6.4 Partitioning and Locking ..................................................................................... 3109
20 Stored Programs and Views ..................................................................................................... 3111
20.1 Defining Stored Programs ............................................................................................. 3112
20.2 Using Stored Routines (Procedures and Functions) ........................................................ 3113
20.2.1 Stored Routine Syntax ........................................................................................ 3114
20.2.2 Stored Routines and MySQL Privileges ............................................................... 3114
20.2.3 Stored Routine Metadata .................................................................................... 3115
20.2.4 Stored Procedures, Functions, Triggers, and LAST_INSERT_ID() ......................... 3115
20.3 Using Triggers .............................................................................................................. 3115
20.3.1 Trigger Syntax and Examples ............................................................................. 3116
20.3.2 Trigger Metadata ................................................................................................ 3120
20.4 Using the Event Scheduler ............................................................................................ 3120
20.4.1 Event Scheduler Overview .................................................................................. 3121
20.4.2 Event Scheduler Configuration ............................................................................ 3122
20.4.3 Event Syntax ...................................................................................................... 3124
20.4.4 Event Metadata .................................................................................................. 3124
20.4.5 Event Scheduler Status ...................................................................................... 3125
20.4.6 The Event Scheduler and MySQL Privileges ........................................................ 3126
20.5 Using Views .................................................................................................................. 3128
MySQL 5.6 Reference Manual
xx
20.5.1 View Syntax ....................................................................................................... 3129
20.5.2 View Processing Algorithms ................................................................................ 3129
20.5.3 Updatable and Insertable Views .......................................................................... 3131
20.5.4 The View WITH CHECK OPTION Clause ............................................................ 3132
20.5.5 View Metadata ................................................................................................... 3133
20.6 Access Control for Stored Programs and Views .............................................................. 3133
20.7 Binary Logging of Stored Programs ............................................................................... 3135
21 INFORMATION_SCHEMA Tables ............................................................................................ 3143
21.1 The INFORMATION_SCHEMA CHARACTER_SETS Table ............................................ 3147
21.2 The INFORMATION_SCHEMA COLLATIONS Table ....................................................... 3147
21.3 The INFORMATION_SCHEMA COLLATION_CHARACTER_SET_APPLICABILITY Table 3148
21.4 The INFORMATION_SCHEMA COLUMNS Table ........................................................... 3148
21.5 The INFORMATION_SCHEMA COLUMN_PRIVILEGES Table ........................................ 3149
21.6 The INFORMATION_SCHEMA ENGINES Table ............................................................. 3150
21.7 The INFORMATION_SCHEMA EVENTS Table .............................................................. 3150
21.8 The INFORMATION_SCHEMA GLOBAL_STATUS and SESSION_STATUS Tables ......... 3154
21.9 The INFORMATION_SCHEMA GLOBAL_VARIABLES and SESSION_VARIABLES
Tables .................................................................................................................................. 3154
21.10 The INFORMATION_SCHEMA KEY_COLUMN_USAGE Table ...................................... 3154
21.11 The INFORMATION_SCHEMA OPTIMIZER_TRACE Table ........................................... 3155
21.12 The INFORMATION_SCHEMA PARAMETERS Table ................................................... 3156
21.13 The INFORMATION_SCHEMA PARTITIONS Table ...................................................... 3156
21.14 The INFORMATION_SCHEMA PLUGINS Table ........................................................... 3159
21.15 The INFORMATION_SCHEMA PROCESSLIST Table ................................................... 3160
21.16 The INFORMATION_SCHEMA PROFILING Table ........................................................ 3161
21.17 The INFORMATION_SCHEMA REFERENTIAL_CONSTRAINTS Table ......................... 3162
21.18 The INFORMATION_SCHEMA ROUTINES Table ......................................................... 3163
21.19 The INFORMATION_SCHEMA SCHEMATA Table ....................................................... 3165
21.20 The INFORMATION_SCHEMA SCHEMA_PRIVILEGES Table ...................................... 3165
21.21 The INFORMATION_SCHEMA STATISTICS Table ....................................................... 3165
21.22 The INFORMATION_SCHEMA TABLES Table ............................................................. 3166
21.23 The INFORMATION_SCHEMA TABLESPACES Table .................................................. 3168
21.24 The INFORMATION_SCHEMA TABLE_CONSTRAINTS Table ...................................... 3168
21.25 The INFORMATION_SCHEMA TABLE_PRIVILEGES Table .......................................... 3168
21.26 The INFORMATION_SCHEMA TRIGGERS Table ........................................................ 3169
21.27 The INFORMATION_SCHEMA USER_PRIVILEGES Table ........................................... 3171
21.28 The INFORMATION_SCHEMA VIEWS Table ............................................................... 3171
21.29 InnoDB INFORMATION_SCHEMA Tables .................................................................... 3173
21.29.1 The INFORMATION_SCHEMA INNODB_BUFFER_PAGE Table ........................ 3173
21.29.2 The INFORMATION_SCHEMA INNODB_BUFFER_PAGE_LRU Table ................ 3175
21.29.3 The INFORMATION_SCHEMA INNODB_BUFFER_POOL_STATS Table ............ 3177
21.29.4 The INFORMATION_SCHEMA INNODB_CMP and INNODB_CMP_RESET
Tables .......................................................................................................................... 3179
21.29.5 The INFORMATION_SCHEMA INNODB_CMPMEM and
INNODB_CMPMEM_RESET Tables .............................................................................. 3180
21.29.6 The INFORMATION_SCHEMA INNODB_CMP_PER_INDEX and
INNODB_CMP_PER_INDEX_RESET Tables ................................................................. 3182
21.29.7 The INFORMATION_SCHEMA INNODB_FT_BEING_DELETED Table ............... 3183
21.29.8 The INFORMATION_SCHEMA INNODB_FT_CONFIG Table .............................. 3184
21.29.9 The INFORMATION_SCHEMA INNODB_FT_DEFAULT_STOPWORD Table ...... 3185
21.29.10 The INFORMATION_SCHEMA INNODB_FT_DELETED Table ......................... 3186
21.29.11 The INFORMATION_SCHEMA INNODB_FT_INDEX_CACHE Table ................. 3187
21.29.12 The INFORMATION_SCHEMA INNODB_FT_INDEX_TABLE Table .................. 3188
21.29.13 The INFORMATION_SCHEMA INNODB_LOCKS Table ................................... 3189
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