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From "Ben Martz (JIRA)" <>
Subject [jira] Commented: (LUCENENET-350) Performance enhancement in FastVectorHighlighter
Date Wed, 17 Mar 2010 19:35:27 GMT


Ben Martz commented on LUCENENET-350:

Agreed. I was just concerned about the code divergence considering the core guideline of remaining
1:1 with the original Java code while considering this contribution as a valuable (and unique
to Lucene.Net) branch of an existing contrib item. I'm at a loss for a better idea though
right now.

> Performance enhancement in FastVectorHighlighter
> ------------------------------------------------
>                 Key: LUCENENET-350
>                 URL:
>             Project: Lucene.Net
>          Issue Type: Improvement
>            Reporter: Bianco Veigel
>         Attachments: FieldTermStack.patch, FieldTermStack.patch, VectorHighlightMapper.cs
> I've had some performace issues with highlighting large documents (>25MB plain text,
> 11000 Terms per Field)
> This can be usual if your indexing i.e. log or trace files.
> Most of the time is spent loading the field value and stored TermVectors and Offets and
itering over this List.
> I've build a TermVectorMapper which filters this List, by the searched terms, so that
the time is reduces by approx. 30%

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