First startup of Jira 8 on an upgrade may take a long time
The first startup of Jira 8.x when upgrading from Jira 7.x may take several minutes.
One of the improvements we are shipping to Jira 8.0 is the addition of new indexes to two of the most heavily used tables: 'changeitem' and 'changegroup'. These tables store details on all changes to Jira issues, displayed in the "History" tab when viewing an issue. This should result in reduced loading times for issues and lessen the cost of queries executed against the database to retrieve this data. This is being tracked on - JRASERVER-63002Getting issue details... STATUS .
However, creating indexes on these tables that usually contains millions of rows can take several minutes and we have no easy way to track the progress of these processes as they are executed at the database level.
Wait for the startup to progress.