mutil thread

app/models/journal_observer.rb

@@ -24,9 +24,9 @@ class JournalObserver < ActiveRecord::Observer
           (Setting.notified_events.include?('issue_priority_updated') && journal.new_value_for('priority_id').present?)
         )
              ##by senluo
- #     thread4=Thread.new do
+       thread4=Thread.new do
-        Mailer.issue_edit(journal).deliver
+          Mailer.issue_edit(journal).deliver
-  #    end
+       end
     end
   end
 end