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Posted to dev@tika.apache.org by "Chris A. Mattmann (JIRA)" <ji...@apache.org> on 2018/05/24 20:55:00 UTC
[jira] [Assigned] (TIKA-2520) OptimaizeLangDetector#loadModels()
should not be called for every single langdetect HTTP request
[ https://issues.apache.org/jira/browse/TIKA-2520?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chris A. Mattmann reassigned TIKA-2520:
---------------------------------------
Assignee: Chris A. Mattmann
> OptimaizeLangDetector#loadModels() should not be called for every single langdetect HTTP request
> ------------------------------------------------------------------------------------------------
>
> Key: TIKA-2520
> URL: https://issues.apache.org/jira/browse/TIKA-2520
> Project: Tika
> Issue Type: Improvement
> Components: server
> Affects Versions: 1.16
> Reporter: Vincent van Donselaar
> Assignee: Chris A. Mattmann
> Priority: Minor
> Labels: performance
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> Tika REST server's `/language` resource invokes the relatively heavy `loadModels` operation for every language detect call:
> {code:title=LanguageResource.java}
> public String detect(final String string) throws IOException {
> LanguageResult language = new OptimaizeLangDetector().loadModels().detect(string);
> String detectedLang = language.getLanguage();
> LOG.info("Detecting language for incoming resource: [{}]", detectedLang);
> return detectedLang;
> }
> {code}
> This could be optimized by (lazy?) loading the models only once and keep them in memory. I assume the `LanguageDetector` is not thread safe, so I expect this requires an ExecutorService with language detectors.
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