sidshas03 opened a new pull request, #5357:
URL: https://github.com/apache/fineract/pull/5357
## Description
This PR fixes the duplicate interest posting issue reported in
**FINERACT-1659**, where the **Post Interest** job could post interest multiple
times for the same savings account within the same posting period.
### What changed
- Added a safeguard in `SavingsSchedularInterestPoster` to **skip accounts
where interest has already been posted for the current period**, by comparing
`interestPostedTillDate` with the current business date.
- Updated the transaction isolation level to **`SERIALIZABLE`** to prevent
duplicate postings caused by race conditions during parallel scheduler runs.
### Tests
Added two integration tests to validate the behavior:
- `testPostInterestPreventsDuplicateOnSameDay`
Ensures running the job twice on the same day results in **only one**
interest posting.
- `testPostInterestSkipsCurrentPeriodButAllowsNewPeriod`
Ensures the job **skips** reposting within the current period, while still
allowing postings in a new period.
### Expected outcome
- Running the Post Interest job multiple times within the same posting
period **will not create duplicate transactions**, and the savings account
balance remains unchanged after subsequent runs.
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