Merge branch 'missing-indexes-to-geo-event-log' into 'master'

Add missing indexes to geo_event_log table

See merge request !2836

changelogs/unreleased-ee/missing-indexes-to-geo-event-log.yml

+---
+title: Add missing indexes to geo_event_log table
+merge_request: 2836
+author:
+type: other

db/migrate/20170905202320_add_missing_indexes_to_geo_event_log.rb

+class AddMissingIndexesToGeoEventLog < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    # MySQL automatically creates an index on a foreign-key constraint; PostgreSQL does not
+    if Gitlab::Database.postgresql?
+      add_concurrent_index :geo_event_log, :repositories_changed_event_id
+      add_concurrent_index :geo_event_log, :repository_deleted_event_id
+      add_concurrent_index :geo_event_log, :repository_renamed_event_id
+    end
+  end
+
+  def down
+    if Gitlab::Database.postgresql?
+      remove_concurrent_index :geo_event_log, :repositories_changed_event_id if index_exists? :geo_event_log, :repositories_changed_event_id
+      remove_concurrent_index :geo_event_log, :repository_deleted_event_id if index_exists? :geo_event_log, :repository_deleted_event_id
+      remove_concurrent_index :geo_event_log, :repository_renamed_event_id if index_exists? :geo_event_log, :repository_renamed_event_id
+    end
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170901071411) do
+ActiveRecord::Schema.define(version: 20170905202320) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -671,6 +671,9 @@ ActiveRecord::Schema.define(version: 20170901071411) do
     t.integer "repositories_changed_event_id", limit: 8
   end
 
+  add_index "geo_event_log", ["repositories_changed_event_id"], name: "index_geo_event_log_on_repositories_changed_event_id", using: :btree
+  add_index "geo_event_log", ["repository_deleted_event_id"], name: "index_geo_event_log_on_repository_deleted_event_id", using: :btree
+  add_index "geo_event_log", ["repository_renamed_event_id"], name: "index_geo_event_log_on_repository_renamed_event_id", using: :btree
   add_index "geo_event_log", ["repository_updated_event_id"], name: "index_geo_event_log_on_repository_updated_event_id", using: :btree
 
   create_table "geo_node_namespace_links", force: :cascade do |t|