Alan Woodward created LUCENE-8586:
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             Summary: Logic error in Intervals.or() can cause endless loop
                 Key: LUCENE-8586
                 URL: https://issues.apache.org/jira/browse/LUCENE-8586
             Project: Lucene - Core
          Issue Type: Task
            Reporter: Alan Woodward
            Assignee: Alan Woodward
         Attachments: LUCENE-8586.patch

An intervals source of the following type:
{code:java}
IntervalsSource source = Intervals.ordered(
  Intervals.or(Intervals.term("term1"), Intervals.term("term2")),
  Intervals.term("term3")){code}
can cause an infinite loop when queried, due to a bug in the 'no more 
intervals' logic in DisjunctionIntervalIterator



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