Spring Batch：写入期间回滚后不遵守提交间隔

Question

假设我的提交间隔是 1000。

在写入过程中，我在第 990 条记录处收到错误，根据跳过策略可以跳过该错误。

因此，将会发生回滚，写入器将再次开始从记录 1 写入相同的记录。

但是，这一次，它会提交每条记录。它不尊重提交间隔。这使得工作变得非常缓慢。

为什么会有这样的行为？？我的配置中缺少什么吗？

谢谢。

Answer 1

该行为对于 Spring Batch 隔离坏项目是强制性的，基本上它会回滚块并使用 commit-rate=1 处理/写入每个项目以找到坏项目（在处理器或编写器中）

请参阅 Spring Batch论坛对类似问题的评论

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--> 5 items read, processing starts
<processor called:15>
<processor called:16>
<processor called:17> will throw an error on write
<processor called:18>
<processor called:19>
<before write:[15, 16, 17, 18, 19]>
<on write error>
--> error on item 17, but it was in the list, lets find it
--> rollback
<before chunk>
--> spring batch goes through all items of the chunk again to find the bad item
--> basically it runs now with commit-rate="1" (only for this chunk)
<processor called:15>
<after write:[15]>
<after chunk>
<before chunk>
<processor called:16>
<after write:[16]>
<after chunk>
<before chunk>
<processor called:17> called again for the bad item, because it's still unknown to spring batch, that this is the bad one
--> no write, because itemWriter.write() was called with the bad item only and did throw an exception (again)
--> but now spring batch knows the bad item
<before chunk>