From 7fb850e987c92a6b863cc1f66a6ec7318460f1de Mon Sep 17 00:00:00 2001 From: unarist Date: Tue, 28 Nov 2017 04:22:27 +0900 Subject: Merge indexes for reblog on statuses table (#5831) We added an index for `[account_id, reblog_of_id]`, but we already have a similar index for `reblog_of_id`. Those index will be bigger according to statuses count. For example, `reblog_of_id` index uses 800MB for 10GB statuses table. So this patch swaps indexed columns like `[reblog_of_id, account_id]`, then it will covers both usage with single index. Since those index creation may take a while, I've also disabled previous index creation. --- db/schema.rb | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'db/schema.rb') diff --git a/db/schema.rb b/db/schema.rb index 7422bd127..120b15950 100644 --- a/db/schema.rb +++ b/db/schema.rb @@ -10,7 +10,7 @@ # # It's strongly recommended that you check this file into your version control system. -ActiveRecord::Schema.define(version: 20171125031751) do +ActiveRecord::Schema.define(version: 20171125190735) do # These are extensions that must be enabled in order to support this database enable_extension "plpgsql" @@ -409,10 +409,9 @@ ActiveRecord::Schema.define(version: 20171125031751) do t.bigint "application_id" t.bigint "in_reply_to_account_id" t.index ["account_id", "id"], name: "index_statuses_on_account_id_id" - t.index ["account_id", "reblog_of_id"], name: "index_statuses_on_account_id_and_reblog_of_id" t.index ["conversation_id"], name: "index_statuses_on_conversation_id" t.index ["in_reply_to_id"], name: "index_statuses_on_in_reply_to_id" - t.index ["reblog_of_id"], name: "index_statuses_on_reblog_of_id" + t.index ["reblog_of_id", "account_id"], name: "index_statuses_on_reblog_of_id_and_account_id" t.index ["uri"], name: "index_statuses_on_uri", unique: true end -- cgit