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https://issues.apache.org/jira/browse/LUCENE-2258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-2258:
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    Attachment: LUCENE-2258.patch

Patch.

> Remove "synchonized" from FuzzyTermEnum#similarity(final String target)
> -----------------------------------------------------------------------
>
>                 Key: LUCENE-2258
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2258
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Search
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>            Priority: Trivial
>             Fix For: 2.9.2, Flex Branch, 3.0.1, 3.1
>
>         Attachments: LUCENE-2258.patch
>
>
> The similarity method in FuzzyTermEnum is synchronized which is stupid 
> because of:
> - TermEnums are the iterator pattern and so are single-thread per definition
> - The method is private, so nobody could ever create a fake FuzzyTermEnum 
> just to have this method and use it multithreaded.
> - The method is not static and has no static fields - so instances do not 
> affect each other
> The root of this comes from LUCENE-296, but was never reviewd and simply 
> committed. The argument for making it synchronized is wrong.

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