mirror of
https://github.com/mastodon/mastodon.git
synced 2024-08-20 21:08:15 -07:00
7fb850e987
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.
14 lines
419 B
Ruby
14 lines
419 B
Ruby
class RemoveOldReblogIndexOnStatuses < ActiveRecord::Migration[5.1]
|
|
disable_ddl_transaction!
|
|
|
|
def up
|
|
# This index may not exists (see migration 20171122120436)
|
|
remove_index :statuses, [:account_id, :reblog_of_id] if index_exists?(:statuses, [:account_id, :reblog_of_id])
|
|
|
|
remove_index :statuses, :reblog_of_id
|
|
end
|
|
|
|
def down
|
|
add_index :statuses, :reblog_of_id, algorithm: :concurrently
|
|
end
|
|
end
|