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Update in chunks.

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This commit is contained in:
Roger Braun 2017-11-09 12:33:38 +01:00
parent f1d27a5fbb
commit 20b8b87743
1 changed files with 14 additions and 3 deletions
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17
priv/repo/migrations/20171109091239_add_actor_to_activity.exs
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@ -1,6 +1,8 @@
defmodule Pleroma.Repo.Migrations.AddActorToActivity do defmodule Pleroma.Repo.Migrations.AddActorToActivity do
use Ecto.Migration use Ecto.Migration
alias Pleroma.{Repo, Activity}
@disable_ddl_transaction true @disable_ddl_transaction true
def up do def up do
@ -8,9 +10,18 @@ defmodule Pleroma.Repo.Migrations.AddActorToActivity do
add :actor, :string add :actor, :string
end end
execute """ max = Repo.aggregate(Activity, :max, :id)
update activities set actor = data->>'actor'; IO.puts("#{max} activities")
""" chunks = 0..(round(max / 10_000))
Enum.each(chunks, fn (i) ->
min = i * 10_000
max = min + 10_000
IO.puts("Updating #{min}")
execute """
update activities set actor = data->>'actor' where id > #{min} and id <= #{max};
"""
end)
create index(:activities, [:actor, "id DESC NULLS LAST"], concurrently: true) create index(:activities, [:actor, "id DESC NULLS LAST"], concurrently: true)
end end