Manual:$wgCommentTableSchemaMigrationStage/ja

$wgCommentTableSchemaMigrationStage は  テーブル スキーマ移行の段階を示します. Most wikis can set this to  and run   as soon as any necessary extensions are updated.

詳細
$wgCommentTableSchemaMigrationStage can be set to one of the Schema change migration flags. The allowed value range for the configuration is one of the  constants. The available constants and their planned use cases on Wikimedia Foundation wikis are as follows:


 * (0, default value) - 古いスキーマのみを読み書きします. 新しいスキーマが存在する必要すらありません.  This is used from when the patch is merged until the schema change is actually applied to the database.
 * (1) - 新旧両方のスキーマに書き込みます. Read the new schema preferentially, falling back to the old. This is used while the change is being tested, allowing easy roll-back to the old schema.
 * (2) - 新しいスキーマのみに書き込みます. Read the new schema preferentially, falling back to the old. This is used while running the maintenance script to migrate existing entries in the old schema to the new schema.
 * (3) - 新しいスキーマのみを読み書きします. 旧スキーマ (および機能フラグ) は除去できる場合があります.

For non-Wikimedia Foundation wikis it is recommended to set this to  and to run   in order to take advantage of the new schema.

$wgForeignFileRepos
If you operate a wiki farm using  with   or , it is important to keep in mind that client and repository wiki must be in nearby migration stages. (T181930 を参照)