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https://issues.apache.org/jira/browse/MAHOUT-706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044390#comment-13044390
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Hudson commented on MAHOUT-706:
-------------------------------
Integrated in Mahout-Quality #860 (See
[https://builds.apache.org/hudson/job/Mahout-Quality/860/])
MAHOUT-706 use reusable TokenStream in Lucene for performance
srowen : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1131447
Files :
*
/mahout/trunk/examples/src/main/java/org/apache/mahout/analysis/WikipediaAnalyzer.java
*
/mahout/trunk/examples/src/main/java/org/apache/mahout/classifier/bayes/WikipediaDatasetCreatorMapper.java
*
/mahout/trunk/integration/src/main/java/org/apache/mahout/text/MailArchivesClusteringAnalyzer.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/vectorizer/DefaultAnalyzer.java
*
/mahout/trunk/examples/src/main/java/org/apache/mahout/classifier/sgd/TrainNewsGroups.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/vectorizer/document/SequenceFileTokenizerMapper.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/classifier/BayesFileFormatter.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/vectorizer/encoders/LuceneTextValueEncoder.java
> reuse lucene tokenstreams
> -------------------------
>
> Key: MAHOUT-706
> URL: https://issues.apache.org/jira/browse/MAHOUT-706
> Project: Mahout
> Issue Type: Improvement
> Reporter: Robert Muir
> Assignee: Grant Ingersoll
> Priority: Minor
> Fix For: 0.6
>
> Attachments: MAHOUT-706.patch
>
>
> Currently, mahout uses Lucene's non-reusable analysis API.
> This means that per-"document", a lot of objects are recreated (e.g. every
> TokenStream in the analysis chain, every Attribute).
> This can create a lot of unnecessary overhead, particularly if "documents"
> are short.
> It looks like an easy win to use the reusable API (reusableTokenStream)
> instead.
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