What's the VERSION column in BATCH_JOB_INSTANCE of Spring batch meta tables?

I implemented some codes with spring batch. After my batch worked, data have been stored in metadata tables.

I figured out that BATCH_JOB_INSTANCE and BATCH_JOB_EXECUTION have VERSION column and their version columns differ.

Could you tell me what version mean?

Solution

Spring Batch employs an optimistic locking strategy when dealing with database updates, and this is where the version column comes to play. This is explained in details in the Appendix A: Meta-Data Schema.

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