. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261 Start a tablet to correspond to legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 Legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . default value is multi, and will set it in multi-database mode. This is the same as the previous legacy behavior. To enforce single-database transactions, the VTGates can be started by specifying tra

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242 Start a tablet to correspond to legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243 Connect default value is multi, and will set it in multi-database mode. This is the same as the previous legacy behavior. To enforce single-database transactions, the VTGates can be started by specifying tra be used to compose many features. It can be used for the following use cases: 74 • Resharding: Legacy workflows of vertical and horizontal resharding. New workflows of resharding from an unsharded to

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 Start a tablet to correspond to legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337 Legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . File:Position based VReplication description: Problem Statement In order to support migration from legacy databases that may not have GTID turned on, there is a need for VReplication to support file:position

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343 Start a tablet to correspond to legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343 Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379 Legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . File:Position based VReplication description: Problem Statement In order to support migration from legacy databases that may not have GTID turned on, there is a need for VReplication to support file:position

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 Start a tablet to correspond to legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354 Legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . File:Position based VReplication description: Problem Statement In order to support migration from legacy databases that may not have GTID turned on, there is a need for VReplication to support file:position

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384 Start a tablet to correspond to legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385 Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418 Legacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The best character set to be used today is utf8mb4 (4 byte UTF8), the successor to utf8. However, legacy systems may carry non-UTF characters sets, specific to European, Chinese, or other languages. VReplication

default value is multi, and will set it in multi-database mode. This is the same as the previous legacy behavior. To enforce single-database transactions, the VTGates can be started by specifying tra can be used to compose many features. It can be used for the following use cases: • Resharding: Legacy workflows of vertical and horizontal resharding. New workflows of resharding from an unsharded to active reparent commands disabled (unset the -disable_active_reparents flag to enable) • cannot use legacy syntax and flag - for action at the same time GetShard Outputs

default value is multi, and will set it in multi-database mode. This is the same as the previous legacy behavior. To enforce single-database transactions, the VTGates can be started by specifying tra can be used to compose many features. It can be used for the following use cases: • Resharding: Legacy workflows of vertical and horizontal resharding. New workflows of resharding from an unsharded to active reparent commands disabled (unset the -disable_active_reparents flag to enable) • cannot use legacy syntax and flag - for action at the same time GetShard Outputs