Spring Batch：在写入期间回滚后，Commit-Interval没有兑现

1 回答

• 2

  bevaviour对于spring批处理是必须的，以隔离坏项，基本上它回滚块并使用commit-rate = 1处理/写入每个项目以找到坏项（在处理器或编写器中）

  见spring batch forum comment to similar problem

  相关部分

  --> 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>
  

  回复于 2024-04-19T10:43:43+08:00