FVH: slow performance on very large queries
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Key: LUCENE-3719
URL: https://issues.apache.org/jira/browse/LUCENE-3719
Project: Lucene - Java
Issue Type: Bug
Components: modules/highlighter
Affects Versions: 3.5, 4.0
Reporter: Igor Motov
Priority: Minor
The change from HashSet to ArrayList for flatQueries in LUCENE-3019 resulted in
very significant slowdown in some of our e-discovery queries after upgrade from
3.4.0 to 3.5.0. Our queries sometime contain tens of thousands of terms. As a
result, major portion of execution time for such queries is now spent in the
flatQueries.contains( sourceQuery ) method calls.
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