SpecialOperations.isFinite can have TERRIBLE TERRIBLE runtime in certain
situations
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Key: LUCENE-2970
URL: https://issues.apache.org/jira/browse/LUCENE-2970
Project: Lucene - Java
Issue Type: Bug
Affects Versions: 4.0
Reporter: Robert Muir
Assignee: Robert Muir
Fix For: 4.0
in an application of mine, i experienced some very slow query times with finite
automata (all the DFAs are acyclic)
It turned out, the slowdown is some terrible runtime in
SpecialOperations.isFinite <-- this is used to determine if the DFA is acyclic
or not.
(in this case I am talking about even up to minutes of cpu).
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