迁移问题

lib/tasks/sync_evaluate.rake

@@ -2,7 +2,7 @@ desc "同步学院或者单位评测数"
 
 namespace :sync_evaluate do
   task outpus_count: :environment do
-    School.find_each do |school|
+    School.find_in_batches(batch_size: 50) do |school|
       Parallel.each_with_index(school, in_processes: 5) do |s|
         puts "school_id:#{s.id}"
         evaluate_count = Game.find_by_sql("select sum(g.evaluate_count) as e_count from games g, user_extensions ue where