Avoid adding index if already exists

d2f4e8f9 · Paco Guzman · James Edwards-Jones · 797fe0a6 · d2f4e8f9
Commit d2f4e8f9 authored Jul 08, 2016 by Paco Guzman Committed by James Edwards-Jones Jan 08, 2018
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db/migrate/20160301174731_add_fingerprint_index.rb db/migrate/20160301174731_add_fingerprint_index.rb +2 -1

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--- a/db/migrate/20160301174731_add_fingerprint_index.rb
+++ b/db/migrate/20160301174731_add_fingerprint_index.rb
@@ -4,6 +4,7 @@ class AddFingerprintIndex < ActiveRecord::Migration
  DOWNTIME = false
+  # https://gitlab.com/gitlab-org/gitlab-ee/issues/764
  def change
    args = [:keys, :fingerprint]
@@ -11,6 +12,6 @@ class AddFingerprintIndex < ActiveRecord::Migration
      args << { algorithm: :concurrently }
    end
-    add_index(*args)
+    add_index(*args) unless index_exists?(:keys, :fingerprint)
  end
 end