Summary

JIRA bulk edit extremely slow and can timeout in BulkEditDetails.jspa call. There are two serious inefficiencies it the method: com.atlassian.jira.issue.fields.Assignees#bulkOptionsForHtmlSelect which is enabled when frother.assignee.field to false

In JIRA 5.x Assignee drop down list has been enhanced to show only "Suggested users initially" and only after typing in at least 1 character the valid Assignees are shown matching that character. See KB: How+to+fully+render+assignee+drop-down+list+in+JIRA

Environment

JIRA with high number of assignable users (10k)

Steps to Reproduce

1. Run search criteria for the 20x issues to edit for project with high number of assignable users (10k)
2. Choose BulkChange
3. Choose Edit all issues

Expected Results

You get to Step 3 and it's fast

Actual Results

BulkEditDetails.jspa is very slow or time-out

Notes

None.

Workaround

Set frother.assignee.field to true