potiuk commented on PR #59183:
URL: https://github.com/apache/airflow/pull/59183#issuecomment-3629434128
I don't think it's a good solution
SELECT FOR UPDATE will not lock anything when ADPR lock is missing.
If the task switch happens after ROW lock in first event handling, both
select for updates will run and return no row, and this will create both ADPRs:
| Time | Event 1 | Event 2
|
|------|--------------------------------------|--------------------------------------|
| 0 | SELECT FOR UPDATE ADR (NO ROW FOUND) |
|
| 1 | | SELECT FOR UPDATE ADR (NO
ROW FOUND) |
| 2 | | CREATE ADR
|
| 3 | CREATE ADR |
|
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