這時發現如果處理總數足夠大時，被處理的ITEMS總數會少于應該處理的總數。
+------------+--------------+-------------+-----------------+------------------+--------------------+----------------+-----------+-------------------------
| READ_COUNT | FILTER_COUNT | WRITE_COUNT | READ_SKIP_COUNT | WRITE_SKIP_COUNT | PROCESS_SKIP_COUNT | ROLLBACK_COUNT | EXIT_CODE | EXIT_MESSAGE
-+------------+--------------+-------------+-----------------+------------------+--------------------+----------------+-----------+-------------------------
| 1 | 0 | 1 | 0 | 0 | 0 | 0 | COMPLETED |
| 30006 | 0 | 29947 | 0 | 59 | 0 | 61 | COMPLETED | Waited for 101 results.