Exceptions are thrown in Liferay and Solr logs when a user enters a search query using a lowercase keyword

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE
• Fix Version/s: 6.2.4 CE GA5, 6.2.X EE
• Component/s: Search Infrastructure, Search Infrastructure > Solr Connector
• Labels:
  • 6.2.x-only
  • liferay-fixpack-portal-66-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 14
• Fix Priority: 4
• Git Pull Request: https://github.com/ZoltanTakacs/liferay-portal-ee/pull/886

Exceptions are thrown in Liferay and Solr logs when a user enters a search query using a lowercase keyword. Lowercase search keywords are interpreted as search terms rather than keywords, while uppercase keywords are interpreted correctly.

Steps to Reproduce:

1. Connect Solr to Liferay.
2. Create 2 web content articles titled "apple" and "banana".
3. Enter "apple and banana" in the web content search bar. (broken query)
4. Enter "apple AND banana" in the web content search bar. (working query)

Expected Result:
A user is able to enter a search query using either lowercase or uppercase keywords and the query should execute fine.

Actual Result:
Using a lowercase keyword causes exceptions in the log.

This is a regression bug in ee-6.2.x caused by LPS-54279. It is not reproducible in master because it was fixed during the move to Elasticsearch.