[OAK-2889] Ignore "order by jcr:score desc" in the query engine (for "union" queries)

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.15, 1.2.3, 1.3.0, 1.4
• Component/s: lucene
• Labels: performance
• Assignee: Thomas Mueller
• Reporter: Thomas Mueller
• Created: 19/May/15 09:18
• Updated: 02/Mar/16 11:28
• Resolved: 21/May/15 11:46

Description

Currently, "order by jcr:score desc" is ignored in the Lucene index, however for "union" queries, this sort order is enforced in the query engine. This will cause queries to be slow if one of the sub-queries is slow.