Spring Batch: Commit-Interval not honored after roll back during write

Question

Say my commit interval is 1000.

And during writing I get a error at 990th record which is skippable as per skip policy.

So a rollback will occur and the wr

Answer 1

that bevaviour is mandatory for spring batch to isolate the bad item(s), basically it rollbacks the chunk and processes/writes each item with commit-rate=1 to find the bad one (in either processor or writer)

see spring batch forum comment to similar problem

the relevant part

--> 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>