Merge branch 'dz-merge-request-version'

3 files changed, 39 insertions, 2 deletions

diff --git a/db/migrate/20160725104020_merge_request_diff_remove_uniq.rb b/db/migrate/20160725104020_merge_request_diff_remove_uniq.rb
new file mode 100644
index 00000000000..c8cbd2718ff
--- /dev/null
+++ b/db/migrate/20160725104020_merge_request_diff_remove_uniq.rb
@@ -0,0 +1,21 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class MergeRequestDiffRemoveUniq < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+  disable_ddl_transaction!
+
+  DOWNTIME = false
+
+  def up
+    if index_exists?(:merge_request_diffs, :merge_request_id)
+      remove_index :merge_request_diffs, :merge_request_id
+    end
+  end
+
+  def down
+    unless index_exists?(:merge_request_diffs, :merge_request_id)
+      add_concurrent_index :merge_request_diffs, :merge_request_id, unique: true
+    end
+  end
+end
diff --git a/db/migrate/20160725104452_merge_request_diff_add_index.rb b/db/migrate/20160725104452_merge_request_diff_add_index.rb
new file mode 100644
index 00000000000..6d04242dd25
--- /dev/null
+++ b/db/migrate/20160725104452_merge_request_diff_add_index.rb
@@ -0,0 +1,17 @@
+class MergeRequestDiffAddIndex < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+  disable_ddl_transaction!
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  def up
+    add_concurrent_index :merge_request_diffs, :merge_request_id
+  end
+
+  def down
+    if index_exists?(:merge_request_diffs, :merge_request_id)
+      remove_index :merge_request_diffs, :merge_request_id
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 802c928b2fc..38779065225 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -593,7 +593,7 @@ ActiveRecord::Schema.define(version: 20160823081327) do
     t.string   "start_commit_sha"
   end
 
-  add_index "merge_request_diffs", ["merge_request_id"], name: "index_merge_request_diffs_on_merge_request_id", unique: true, using: :btree
+  add_index "merge_request_diffs", ["merge_request_id"], name: "index_merge_request_diffs_on_merge_request_id", using: :btree
 
   create_table "merge_requests", force: :cascade do |t|
     t.string   "target_branch",                                null: false
@@ -620,7 +620,6 @@ ActiveRecord::Schema.define(version: 20160823081327) do
     t.string   "merge_commit_sha"
     t.datetime "deleted_at"
     t.string   "in_progress_merge_commit_sha"
-    t.integer  "lock_version"
   end
 
   add_index "merge_requests", ["assignee_id"], name: "index_merge_requests_on_assignee_id", using: :btree