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https://issues.apache.org/jira/browse/SOLR-809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hoss Man resolved SOLR-809.
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Resolution: Cannot Reproduce
I'm resolving this as Cannot Reproduce because it doesn't seem like there is
enough information to really have a sense of what's happening, and whether it's
a bug or a misunderstanding on the users part about how SynonymFilterFactory
works.
In particular, we don't know what the full analysis chain of either the index
or query analyzers wre.
Geoffrey: I would suggest starting a thread about this on the solr-user list,
describing in more detail what your configs look like and see if someone can
help make sense of the behavior you are seeing. Then we can reopen if/when we
identify that there really is a bug.
> synonyms are matched case-insensitive but inserted as case-sensitive
> --------------------------------------------------------------------
>
> Key: SOLR-809
> URL: https://issues.apache.org/jira/browse/SOLR-809
> Project: Solr
> Issue Type: Bug
> Reporter: Geoffrey Young
> Priority: Minor
>
> I had a synonyms file with this line
> 2, to, two, too, II
> (that's a capital ii last in the list)
> and an index with
> <filter class="solr.LowerCaseFilterFactory"/>
> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
> ignoreCase="true" expand="true"/>
> in that order. a query for 'This II That' failed to match the same text in
> the index because the synonym filter appears to have expanded the (now)
> lowercase
> this ii that
> to
> this 2 to two too II that
> and then the (also) lowercased query failed to match.
> so it seems that synonym expansion is matching tokens in a case-insensitive
> manner when it probably shouldn't. or it could dwim but re-add in the
> original token instead of the matched one, but that's a bit more roundabout.
> I just made sure my entire synonyms file was lowercase.
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