Spring Batch Transaction issue

Issue

This Content is from Stack Overflow. Question asked by vaibhav

I am implementing application using spring Batch. I am following ItemReader, processor, ItemWriter Approach. I have created Partitioner component which is partitioning Data. Through ItemReader I am reading Data and processing it.
After processing I am writing back data in DB. Once job is finished, I observed there is some data missing in DB. Sometimes execution of the one partition fails.. It is random.
How Spring Batch creates Transactions. Is it transaction per Partition ? Or do we need to maintain thread synchronization ?

E.g.

  • Total no of records – 1000
  • chunk – 100
  • Partition1 – 500
  • Partition2 – 500



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