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https://issues.apache.org/jira/browse/SOLR-2636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tom Hill updated SOLR-2636:
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Attachment: SOLR-2636
Trivial patch which just fixes the call to explain.
> Explain doesn't deal with negative only queries completely correctly
> --------------------------------------------------------------------
>
> Key: SOLR-2636
> URL: https://issues.apache.org/jira/browse/SOLR-2636
> Project: Solr
> Issue Type: Bug
> Components: search
> Affects Versions: 3.2
> Reporter: Tom Hill
> Priority: Trivial
> Attachments: SOLR-2636
>
>
> If you do a negative only query, such as -author:[* TO *], explain returns
> NaN for the score. The query executes correctly, however.
> To execute negative only queries, Solr calls QueryUtils.makeQueryable, and
> everything works correctly. But explain doesn't call this, and coord ends up
> dividing by zero.
> One could fix this by fixing the call to explain, which is easy, or perhaps
> by fixing the query parser to generate the query that way in the first place.
> (It looks like extended dismax does the latter, and so shouldn't have
> problems).
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