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https://issues.apache.org/jira/browse/SOLR-6494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14129956#comment-14129956
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Alexander S. commented on SOLR-6494:
------------------------------------
Added the schema and debug output here:
http://lucene.472066.n3.nabble.com/Help-with-a-slow-filter-query-td4158159.html
> Query filters applied in a wrong order
> --------------------------------------
>
> Key: SOLR-6494
> URL: https://issues.apache.org/jira/browse/SOLR-6494
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.8.1
> Reporter: Alexander S.
>
> This query:
> {code}
> {
> fq: ["type:Award::Nomination"],
> sort: "score desc",
> start: 0,
> rows: 20,
> q: "*:*"
> }
> {code}
> takes just a few milliseconds, but this one:
> {code}
> {
> fq: [
> "type:Award::Nomination",
> "created_at_d:[* TO 2014-09-08T23:59:59Z]"
> ],
> sort: "score desc",
> start: 0,
> rows: 20,
> q: "*:*"
> }
> {code}
> takes almost 15 seconds.
> I have just ≈12k of documents with type "Award::Nomination", but around half
> a billion with created_at_d field set. And it seems Solr applies the
> created_at_d filter first going through all documents where this field is
> set, which is not very smart.
> I think if it can't do anything better than applying filters in the alphabet
> order it should apply them in the order they were received.
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