[LUCENE-8586] Logic error in Intervals.or() can cause endless loop

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.6, 8.0
• Lucene Fields: New
• Assignee: Alan Woodward
• Reporter: Alan Woodward
• Created: 03/Dec/18 15:48
• Updated: 28/Aug/22 15:38
• Resolved: 04/Dec/18 10:03

Description

An intervals source of the following type:

IntervalsSource source = Intervals.ordered(
  Intervals.or(Intervals.term("term1"), Intervals.term("term2")),
  Intervals.term("term3"))

can cause an infinite loop when queried, due to a bug in the 'no more intervals' logic in DisjunctionIntervalIterator