修正负载生成

fe/bench/workload.py

@@ -84,7 +84,7 @@ class Workload:
                 assert code == 200
                 self.store_ids.append(store_id)
                 row_no = 0
-
+                self.book_ids[store_id] = []
                 while row_no < self.book_num_per_store:
                     books = self.book_db.get_book_info(row_no, self.batch_size)
                     if len(books) == 0: