diff options
Diffstat (limited to 'doc/development/avoiding_downtime_in_migrations.md')
| -rw-r--r-- | doc/development/avoiding_downtime_in_migrations.md | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/doc/development/avoiding_downtime_in_migrations.md b/doc/development/avoiding_downtime_in_migrations.md index b844415c94e..9418eafa487 100644 --- a/doc/development/avoiding_downtime_in_migrations.md +++ b/doc/development/avoiding_downtime_in_migrations.md @@ -95,9 +95,7 @@ renaming. For example ```ruby # A regular migration in db/migrate -class RenameUsersUpdatedAtToUpdatedAtTimestamp < ActiveRecord::Migration[4.2] - include Gitlab::Database::MigrationHelpers - +class RenameUsersUpdatedAtToUpdatedAtTimestamp < Gitlab::Database::Migration[1.0] disable_ddl_transaction! def up @@ -125,9 +123,7 @@ We can perform this cleanup using ```ruby # A post-deployment migration in db/post_migrate -class CleanupUsersUpdatedAtRename < ActiveRecord::Migration[4.2] - include Gitlab::Database::MigrationHelpers - +class CleanupUsersUpdatedAtRename < Gitlab::Database::Migration[1.0] disable_ddl_transaction! def up @@ -174,9 +170,7 @@ as follows: ```ruby # A regular migration in db/migrate -class ChangeUsersUsernameStringToText < ActiveRecord::Migration[4.2] - include Gitlab::Database::MigrationHelpers - +class ChangeUsersUsernameStringToText < Gitlab::Database::Migration[1.0] disable_ddl_transaction! def up @@ -195,9 +189,7 @@ Next we need to clean up our changes using a post-deployment migration: ```ruby # A post-deployment migration in db/post_migrate -class ChangeUsersUsernameStringToTextCleanup < ActiveRecord::Migration[4.2] - include Gitlab::Database::MigrationHelpers - +class ChangeUsersUsernameStringToTextCleanup < Gitlab::Database::Migration[1.0] disable_ddl_transaction! def up @@ -245,9 +237,7 @@ the work / load over a longer time period, without slowing down deployments. For example, to change the column type using a background migration: ```ruby -class ExampleMigration < ActiveRecord::Migration[4.2] - include Gitlab::Database::MigrationHelpers - +class ExampleMigration < Gitlab::Database::Migration[1.0] disable_ddl_transaction! class Issue < ActiveRecord::Base @@ -289,9 +279,7 @@ release) by a cleanup migration, which should steal from the queue and handle any remaining rows. For example: ```ruby -class MigrateRemainingIssuesClosedAt < ActiveRecord::Migration[4.2] - include Gitlab::Database::MigrationHelpers - +class MigrateRemainingIssuesClosedAt < Gitlab::Database::Migration[1.0] disable_ddl_transaction! class Issue < ActiveRecord::Base |