SPRING BATCH中STEP如果没加TRANSACTION MANAGER
这时发现如果处理总数足够大时，被处理的ITEMS总数会少于应该处理的总数。
+------------+--------------+-------------+-----------------+------------------+--------------------+----------------+-----------+-------------------------
| 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.
如上面的总数是30006，但COMMIT的总数是29947，有59个被跳过了。
因此需在STEP上加TRANSACTION MANAGER.
https://stackoverflow.com/questions/42803941/spring-batch-incorrect-write-skip-count-issue正文到此结束
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