X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/bed9cd00ed166ce346da4b8a9b654ddf86e64e70..35fbcf28154b6f15f697018016fbabc952e018a5:/db/migrate/021_move_to_innodb.rb diff --git a/db/migrate/021_move_to_innodb.rb b/db/migrate/021_move_to_innodb.rb index da0488ca5..b58817ed9 100644 --- a/db/migrate/021_move_to_innodb.rb +++ b/db/migrate/021_move_to_innodb.rb @@ -1,45 +1,41 @@ +require "migrate" + class MoveToInnodb < ActiveRecord::Migration - @@conv_tables = ['nodes', 'ways', 'way_tags', 'way_nodes', - 'current_way_tags', 'relation_members', - 'relations', 'relation_tags', 'current_relation_tags'] + @conv_tables = %w(nodes ways way_tags way_nodes current_way_tags relation_members relations relation_tags current_relation_tags) - @@ver_tbl = ['nodes', 'ways', 'relations'] + @ver_tbl = %w(nodes ways relations) def self.up - remove_index :current_way_tags, :name=> :current_way_tags_v_idx - remove_index :current_relation_tags, :name=> :current_relation_tags_v_idx - - @@ver_tbl.each { |tbl| - change_column tbl, "version", :bigint, :limit => 20, :null => false - } + remove_index :current_way_tags, :name => :current_way_tags_v_idx + remove_index :current_relation_tags, :name => :current_relation_tags_v_idx - @@conv_tables.each { |tbl| - change_engine (tbl, "InnoDB") - } + @ver_tbl.each do |tbl| + change_column tbl, "version", :bigint, :null => false + end - @@ver_tbl.each { |tbl| - add_column "current_#{tbl}", "version", :bigint, :limit => 20, :null => false - # As the initial version of all nodes, ways and relations is 0, we set the - # current version to something less so that we can update the version in + @ver_tbl.each do |tbl| + add_column "current_#{tbl}", "version", :bigint, :null => false + # As the initial version of all nodes, ways and relations is 0, we set the + # current version to something less so that we can update the version in # batches of 10000 tbl.classify.constantize.update_all("version=-1") - while tbl.classify.constantize.count(:conditions => {:version => -1}) > 0 - tbl.classify.constantize.update_all("version=(SELECT max(version) FROM #{tbl} WHERE #{tbl}.id = current_#{tbl}.id)", {:version => -1}, :limit => 10000) + while tbl.classify.constantize.count(:conditions => { :version => -1 }) > 0 + tbl.classify.constantize.update_all("version=(SELECT max(version) FROM #{tbl} WHERE #{tbl}.id = current_#{tbl}.id)", { :version => -1 }, { :limit => 10000 }) end - # execute "UPDATE current_#{tbl} SET version = " + + # execute "UPDATE current_#{tbl} SET version = " + # "(SELECT max(version) FROM #{tbl} WHERE #{tbl}.id = current_#{tbl}.id)" - # The above update causes a MySQL error: - # -- add_column("current_nodes", "version", :bigint, {:null=>false, :limit=>20}) - # -> 1410.9152s - # -- execute("UPDATE current_nodes SET version = (SELECT max(version) FROM nodes WHERE nodes.id = current_nodes.id)") - # rake aborted! - # Mysql::Error: The total number of locks exceeds the lock table size: UPDATE current_nodes SET version = (SELECT max(version) FROM nodes WHERE nodes.id = current_nodes.id) + # The above update causes a MySQL error: + # -- add_column("current_nodes", "version", :bigint, {:null=>false, :limit=>20}) + # -> 1410.9152s + # -- execute("UPDATE current_nodes SET version = (SELECT max(version) FROM nodes WHERE nodes.id = current_nodes.id)") + # rake aborted! + # Mysql::Error: The total number of locks exceeds the lock table size: UPDATE current_nodes SET version = (SELECT max(version) FROM nodes WHERE nodes.id = current_nodes.id) - # The above rails version will take longer, however will no run out of locks - } + # The above rails version will take longer, however will no run out of locks + end end def self.down - raise IrreversibleMigration.new + fail ActiveRecord::IrreversibleMigration end end