David Smiley created LUCENE-6471:
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Summary: Highlighter mergeContiguousFragments shouldn't merge
0-score fragments
Key: LUCENE-6471
URL: https://issues.apache.org/jira/browse/LUCENE-6471
Project: Lucene - Core
Issue Type: Bug
Components: modules/highlighter
Reporter: David Smiley
Priority: Minor
Highlighter.mergeContiguousFragments merges adjacent fragments it is given.
But it is given a list of fragments that do not necessarily have embedded
highlights (e.g. have a score of 0), and so it could grow a fragment
needlessly. I never figured out why this old highlighter keeps around such
fragments instead of eagerly tossing them when the fragment completes, which is
what I think it should do. That would address this problem and might make
things faster. I'm not sure if any highlighter user wants the non-scoring
fragments though.
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