Commit a3ac1e30 authored by Lukas Matt's avatar Lukas Matt Committed by Dennis Schubert

account_deletions get stuck while selecting participations

Following query takes over 20 minutes and fills up the database:
SELECT * FROM participations WHERE author_id = XXXXX

On servers with a huge participations-table this is a serious
performance issue which is easily fixed by the author_id index
Signed-off-by: default avatarLukas Matt <>
parent 46176290
......@@ -2,6 +2,7 @@
## Refactor
* Sort tag autocompletion by tag name [#6734](
* Make account deletions faster by adding an index [#6771](
## Bug fixes
* Fix empty name field when editing aspect names [#6706](
class AddAuthorIdIndexToParticipations < ActiveRecord::Migration
def change
add_index :participations, :author_id, :using => :btree
......@@ -11,7 +11,7 @@
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 20150724152052) do
ActiveRecord::Schema.define(version: 20160327103605) do
create_table "account_deletions", force: :cascade do |t|
t.string "diaspora_handle", limit: 255
......@@ -262,6 +262,7 @@ ActiveRecord::Schema.define(version: 20150724152052) do
t.datetime "updated_at", null: false
add_index "participations", ["author_id"], name: "index_participations_on_author_id", using: :btree
add_index "participations", ["guid"], name: "index_participations_on_guid", length: {"guid"=>191}, using: :btree
add_index "participations", ["target_id", "target_type", "author_id"], name: "index_participations_on_target_id_and_target_type_and_author_id", using: :btree
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