[JENA-1332] Possibly incorrect results from SPARQL with union and filter not exists

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: Jena 3.2.0
• Fix Version/s: Jena 3.2.0
• Component/s: ARQ
• Assignee: Unassigned
• Reporter: Stephen Owens
• Created: 27/Apr/17 22:04
• Updated: 04/May/17 13:34
• Resolved: 04/May/17 13:34

Description

The test case attached to this issue shows an unexpected SPARQL result. We found the result while optimizing some SPARQL that had poor performance with some OPTIONAL clauses. We thought the optimization was the same as the original but in version 3.2.0 the result differs, it worked in 3.0.0.