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From "Robert Muir (JIRA)" <>
Subject [jira] Commented: (LUCENE-2098) make BaseCharFilter more efficient in performance
Date Tue, 16 Mar 2010 15:22:27 GMT


Robert Muir commented on LUCENE-2098:

I think the best way to proceed would be to make it easy to benchmark 
CharFilters in contrib/benchmark, especially this HTML stripping one.

Honestly we don't even know for sure any performance degradation reported
in the original link is really due to BaseCharFilter yet, so I think we need
to benchmark and profile.

> make BaseCharFilter more efficient in performance
> -------------------------------------------------
>                 Key: LUCENE-2098
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Analysis
>    Affects Versions: 3.1
>            Reporter: Koji Sekiguchi
>            Priority: Minor
>         Attachments: LUCENE-2098.patch
> Performance degradation in Solr 1.4 was reported. See:
> The inefficiency has been pointed out in BaseCharFilter javadoc by Mike:
> {panel}
> NOTE: This class is not particularly efficient. For example, a new class instance is
created for every call to addOffCorrectMap(int, int), which is then appended to a private
> {panel}

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