Users able to access JIRA while Lock re-index is occurring

Summary

Users are able to view, log in and perform actions (Eg. Create issue, search) in JIRA even though a Lock re-index is occurring.

Environment

• JIRA Server 7.4.0
• JIRA Server 7.4.1

Steps to Reproduce

1. Perform a Lock re-index on JIRA
2. While JIRA performs the re-index, open a new browser window and access JIRA.
3. Log in as a different user.

Expected Results

Users are supposed to see a 'JIRA access problem' message only

Actual Results

Users are able to view, access and perform actions in JIRA. If users perform an action during the re-index, the following error below may appear in atlassian-jira.log:

[c.a.j.issue.index.DefaultIndexManager] Wait attempt timed out - waited 30000 milliseconds
com.atlassian.jira.issue.index.IndexException: Wait attempt timed out - waited 30000 milliseconds
	at com.atlassian.jira.issue.index.DefaultIndexManager.obtain(DefaultIndexManager.java:824)
	at com.atlassian.jira.issue.index.DefaultIndexManager.access$600(DefaultIndexManager.java:90)
	at com.atlassian.jira.issue.index.DefaultIndexManager$IndexLock.tryLock(DefaultIndexManager.java:1166)
	at com.atlassian.jira.issue.index.DefaultIndexManager.getIndexLock(DefaultIndexManager.java:810)

Workaround

There is no workaround as of yet.