gitlab-org--gitlab-foss/db/migrate/markdown_cache_limits_to_mysql.rb

class MarkdownCacheLimitsToMysql < ActiveRecord::Migration[4.2]
  DOWNTIME = false

  def up
    return unless Gitlab::Database.mysql?

    change_column :snippets, :content_html, :text, limit: 2147483647
  end

  def down
    # no-op
  end
end
Add version 4.2 to all existing migrations DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912 2018-11-13 02:27:31 -05:00			`class MarkdownCacheLimitsToMysql < ActiveRecord::Migration[4.2]`
Fix caching large snippet HTML content on MySQL databases 2017-05-02 05:17:48 -04:00			`DOWNTIME = false`

			`def up`
			`return unless Gitlab::Database.mysql?`

			`change_column :snippets, :content_html, :text, limit: 2147483647`
			`end`

			`def down`
			`# no-op`
			`end`
			`end`