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https://issues.apache.org/jira/browse/SOLR-1804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12845459#action_12845459
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Stanislaw Osinski commented on SOLR-1804:
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I was about to offer advice similar to Grant's, but wanted to wait to confirm
the scope of changes.
If it was only Lucene dependency update, with the assumption that the update
didn't change the documents fed to Carrot2 in tests, the results shouldn't
change. Carrot2 uses Lucene interfaces internally, but the tokenizer is not the
standard Lucene one; so no Version.LUCENE_* issues as far as I can tell.
I haven't got Solr code handy, but maybe the test performs clustering on
summaries generated from the original test documents and Lucene 3.x introduces
some changes in the way summaries are generated?
If the clusters look reasonable, the problem is probably not critical, but
still worth investigation to make sure it's not a bug of some kind.
S.
> Upgrade Carrot2 to 3.2.0
> ------------------------
>
> Key: SOLR-1804
> URL: https://issues.apache.org/jira/browse/SOLR-1804
> Project: Solr
> Issue Type: Improvement
> Components: contrib - Clustering
> Reporter: Grant Ingersoll
> Assignee: Grant Ingersoll
>
> http://project.carrot2.org/release-3.2.0-notes.html
> Carrot2 is now LGPL free, which means we should be able to bundle the binary!
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