Full backup restore versus forward-fix re-run for failed Jira upgrade tasks with undocumented idempotency
Context A Jira Data Center upgrade fails during a sequential upgrade task, leaving the database in an intermediate state not matching any released version. Atlassian documents two recovery approaches: (1) restore the pre-upgrade database and <jira-home> from backup, or (2) fix the underlying issue and re-run the upgrade task. Constraint The maintenance