How to fix the "key too long" error and generate the Doctrine migrations table? - symfony

Question

I'm using / setting up the Symfony DoctrineMigrationsBundle v2.2 configured as followed:
doctrine_migrations:
name: 'My Migrations'
migrations_paths:
'DoctrineMigrations': '%kernel.project_dir%/src/Migrations'
storage:
table_storage:
table_name: 'migrations'
version_column_name: 'version'
version_column_length: 1024
executed_at_column_name: 'executed_at'
# Seems not to be supported:
# Unrecognized option "execution_time_column_name" under "doctrine_migrations.storage.table_storage"
# execution_time_column_name: 'execution_time'
organize_migrations: false
# custom_template: ~
all_or_nothing: false
The RDBMS is MySQL v8, running (locally) on Ubuntu Desktop v20.04:
$ mysql --version
mysql Ver 8.0.22-0ubuntu0.20.04.2 for Linux on x86_64 ((Ubuntu))
The DEFAULT_CHARACTER_SET_NAME is utf8mb4, the DEFAULT_COLLATION_NAME is utf8mb4_unicode_ci:
SELECT
`DEFAULT_CHARACTER_SET_NAME`, `DEFAULT_COLLATION_NAME`
FROM
`INFORMATION_SCHEMA`.`SCHEMATA`
WHERE
`SCHEMA_NAME` = "payment"
;
+----------------------------+------------------------+
| DEFAULT_CHARACTER_SET_NAME | DEFAULT_COLLATION_NAME |
+----------------------------+------------------------+
| utf8mb4 | utf8mb4_unicode_ci |
+----------------------------+------------------------+
While I was playing with the configs, I created two migrations tables (I changed the doctrine_migrations.storage.table_storage.table_name multiple times), somehow... Now, after the configuration has bee completed I want to go the setup through cleanly again from scratch. So I removed both migrations tables and started again. But now I'm getting following error:
$ ./bin/console doctrine:migrations:status
...
In AbstractMySQLDriver.php line 106:
An exception occurred while executing 'CREATE TABLE migrations (version VARCHAR(1024) NOT NULL, executed_at DATETIME NOT NULL COMMENT '(DC2Type:datetime_immutable)', PRIMARY KEY(version)) DEFAULT CHARACTER
SET utf8mb4 COLLATE utf8mb4_unicode_ci ENGINE = InnoDB':
SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 3072 bytes
In PDOConnection.php line 43:
SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 3072 bytes
In PDOConnection.php line 41:
SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 3072 bytes
I tried to reduce the doctrine_migrations.storage.table_storage.version_column_length, but then I'm running in another error:
$ ./bin/console doctrine:migrations:status
...
In BaseNode.php line 348:
Invalid configuration for path "doctrine_migrations.storage.table_storage.version_column_length": The minimum length for the version column is 1024.
In ExprBuilder.php line 189:
The minimum length for the version column is 1024.
How to set this up correctly and get the migrations tables generated?

Answer 1

It's not a (clean) solution, but at least a workaround:
Removing the configuration doctrine_migrations.storage.table_storage.version_column_length makes it work again. The resulting configuration looks then like this:
$ bin/console debug:config doctrine_migrations
...
Current configuration for extension with alias "doctrine_migrations"
====================================================================
doctrine_migrations:
name: 'My Migrations'
migrations_paths:
DoctrineMigrations: /var/www/html/src/Migrations
storage:
table_storage:
table_name: migrations
version_column_name: version
executed_at_column_name: executed_at
version_column_length: null
organize_migrations: false
all_or_nothing: false
dir_name: /var/www/html/src/bundles/Wings/DoctrineMigrations
namespace: Application\Migrations
table_name: migration_versions
column_name: version
column_length: 14
executed_at_column_name: executed_at
custom_template: null