User search facet throws exception for deleted users

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.0 M3
• Fix Version/s: 6.2.3 CE GA4, 6.2.X EE, 7.0.0 M1
• Component/s: Portal Services, Search Infrastructure
• Labels:
  • ee-ts
  • liferay-fixpack-portal-39-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 5
• Git Pull Request: https://github.com/hhuijser/liferay-portal/pull/1964

STEPS TO REPRODUCE
1. Create a user, [e-mail], say. Give the user Administrator role.
2. Log in as test2 and create an indexable asset that ought to persist after user deletion, e.g. a web content article.
3. Log in as [e-mail], deactivate and delete user test2.
4. Place a search portlet on a page and search for a keyword contained in the asset created in step 2.

EXPECTED RESULTS
Search would appear in the right side column

ACTUAL RESULTS
The search results page has one narrow column, with facets and results both displayed in the one column. A stacktrace is produced.