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https://issues.apache.org/jira/browse/LUCENE-5518?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-5518:
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Attachment: LUCENE-5518.patch
Simple patch. I also added some stupid-simple optimizations like a null check
before doing prefixes/suffixes loops (many dictionaries e.g. only have suffixes)
> minor hunspell optimizations
> ----------------------------
>
> Key: LUCENE-5518
> URL: https://issues.apache.org/jira/browse/LUCENE-5518
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/analysis
> Reporter: Robert Muir
> Attachments: LUCENE-5518.patch
>
>
> After benchmarking indexing speed on SOLR-3245, I ran a profiler and a couple
> things stood out.
> There are other things I want to improve too, but these almost double the
> speed for many dictionaries.
> * Hunspell supports two-stage affix stripping, but the vast majority of
> dictionaries don't have any affixes that support it. So we just add a boolean
> (Dictionary.twoStageAffix) that is false until we see one.
> * We use java.util.regex.Pattern for condition checks. This is slow, I
> switched to o.a.l.automaton and its much faster, and uses slightly less RAM
> too.
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