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Posted to dev@lucene.apache.org by "Ferenczi Jim (JIRA)" <ji...@apache.org> on 2016/11/10 16:18:58 UTC

[jira] [Created] (LUCENE-7551) FastVectorHighlighter ignores position in PhraseQuery

Ferenczi Jim created LUCENE-7551:
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             Summary: FastVectorHighlighter ignores position in PhraseQuery
                 Key: LUCENE-7551
                 URL: https://issues.apache.org/jira/browse/LUCENE-7551
             Project: Lucene - Core
          Issue Type: Bug
          Components: core/search
            Reporter: Ferenczi Jim
            Priority: Minor


The PhraseQuery contains a list of terms and the positions for each term. The FVH ignores the term position and assumes that a phrase query is always dense. As a result phrase query with gaps are not highlighted at all. This is problematic for text fields that use a FilteringTokenFilter. This token filter removes tokens but preserves the position increment of each removal. 
Bottom line is that using this token filter breaks the highlighting of phrase query that contains filtered tokens.

 




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