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HuskSync/docs/MPDB-Migration.md

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This guide will walk you through how to migrate from MySQLPlayerDataBridge (MPDB) to HuskSync v2.x.
> **Warning:** Please note that due to MPDB changes, HuskSync only supports migrating from MySQLPlayerDataBridge `<= v4.9.2`. Support for newer versions will be added in the future.
## Requirements
- Spigot servers with MySQLPlayerDataBridge *still installed*
## Migration Instructions
### 1. Install HuskSync v2.x on all Spigot servers
- Download, then install HuskSync on all your servers. Don't uninstall MySQLPlayerDataBridge yet.
- Follow the setup instructions [here](Setup).
- Start your servers again when done.
### 2. Configure the migrator
- With your servers back on and correctly configured to run HuskSync v2.x, ensure nobody is online.
- Use the console on one of your Spigot servers to enter: `husksync migrate mpdb`. If the MPDB migrator is not available, ensure MySQLPlayerDataBridge is still installed.
- Adjust the migration setting as needed using the following command: `husksync migrate mpdb set <setting> <value>`.
- Note that migration will be carried out *from* the database you specify with the settings in console *to* the database configured in `config.yml`.
### 3. Start the migrator
- Run `husksync migrate mpdb start` to begin the migration process. This may take some time, depending on the amount of data you're migrating.
### 4. Uninstall MySQLPlayerDataBridge
- HuskSync will display a message in console when data migration is complete.
- Stop all your Spigot servers and remove the MySQLPlayerDataBridge jar from each of them.
- Start your Spigot servers again.
### 5. Ensure the migration was successful
v3.0: New modular, more compatible data format, new API, better UX (#160) * Start work on v3 * More work on task scheduling * Add comment to notification display slot * Synchronise branches * Use new HuskHomes-style task system * Bump to 2.3 * Remove HuskSyncInitializationException.java * Optimise database for MariaDB * Update libraries, move some around * Tweak command registration * Remove dummyhusksync * Fixup core synchronisation logic to use new task system * Implement new event dispatch subsystem * Remove last remaining future calls * Remove `Event#fire()` * Refactor startup process * New command subsystem, more initialization improvements, locale fixes * Update docs, tweak command perms * Reduce task number during data setting * add todo * Start work on data format / serialization refactor * More work on Bukkit impl * More serialization work * Fixes to serialization, data preview system * Start legacy conversion skeleton * Handle setting empty inventories * Start on-the-fly legacy conversion work * Add advancement conversion * Rewrite advancement get / apply logic * Start work on locked map persistence * More map persistence work * More work on map serialization * Move around persistence logic * Add testing suite * Fix item synchronisation * Finalize more reliable locked map persistence * Remove deprecated method call * remove sync feature enum * Fix held item slot syncing * Make data types modular and API-extensible * Remove some excessive debugging, minor refactor * Fixup date formatting, improve menu UIs * Finish up legacy data converting * Null safety in item stack serializaiton * Fix relocation of nbtapi, update dumping docs * Add v1/MPDB Migrators back in * Fix pinning/unpinning data not working * Consumer instead of Function for editing data * Show file size in DataSnapshotOverview * Fix getIdentifier always returning empty * Re-add items and inventory GUI commands * Improve config file, fixup data restoration * Add min time between backups (more useful backups!) * More work on backups * Fixup backup rotation frequency * Remove stdout debug print in `#getEventPriority` * Improve sync complete locale logic, fix synchronization spelling * Remove `static` on exception * Use dedicated thread for Redis, properly unsubscribe * Refactor `player` package -> `user` * `PlayerDataHolder` -> `UserDataHolder` * Make `StatisticsMap` public, but `@ApiStatus.Internal` * Suppress unused warnings on `Data` * Add option to disable Plan hook * Decompress legacy data before converting * Decompress bytes in fromBytes * Check permission node before serving TAB suggestions * Actually convert legacy item stack data * Fix syntax errors * Minor method refactor in items command * Fixup case-sensitive parsing in HuskSync command * Start API work * More work on API, fix potion effects * Fix cross-server, config formatting for auto-pinned issue * Fix confusion with UserData command, update docs images * Update commands docs * More docs updating * Fix sync feature enabled/disabled checking logic * Fix `#isCustom()` * Enable persistent_data syncing by default * docs: update Sync-Features config snippet * docs: correct typo in Sync Features * More API work * bukkit: slightly optimized schedulers * More API work, various refactorings * docs: Start new API docs * bump dependencies * Add some basic unit tests * docs: Correct typos * More docs work, annotate DB methods as `@Blocking` * Encapsulate `RedisMessage`, minor optimisations * api: Simplify `#getCurrentData` * api: Simplify `editCurrentData`, using `ThrowingConsumers` for better error handling * docs: More Data Snapshot API documenting * docs: add TOC to Data Snapshot API page * bukkit: Make data types extend BukkitData * Move where custom data is stored, finish up Custom Data API docs * Optimise imports * Fix `data_manager_advancements_preview_remaining` locale * Fix advancement and playtime previews * Fix potion effect deserialization * Make snapshot_backup_frequency default to 4, more error handling/logging * docs: Add ToC to Custom Data API * docs: Minor legacy API tweaks * Remove some unneeded catch logic * Suppress a few warnings * Fix Effect constructor being supplied in wrong order
1 year ago
- Verify that the migration was successful by logging in and using the `/userdata list <username>` command to see if the data was imported with the `mpdb_migration` saveCause.
- You can delete the old tables in the database if you want. Be careful to make sure you delete the correct ones.