Issue Summary

Currently, attaching thousands of files to a single issue can lead to concurrency issues during project deletion.

Steps to Reproduce

1. Attach thousands of files to a single issue
2. Move the project to trash
3. Try to permanently delete the project multiple times

Expected Results

Project deletion should be completed without any issues.

Actual Results

From the font-end it look like project is not being deleted from trash, but actually project deletion is intiated and it's taking more time to delete the project as it need remove all the attachment and project configurations.

com.atlassian.jira.issue.managers.DefaultAttachmentManager#deleteAttachmentsByIssue(com.atlassian.jira.issue.Issue, java.util.List<com.atlassian.jira.issue.attachment.Attachment>, java.lang.Long) 

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available