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https://issues.apache.org/jira/browse/CASSANDRA-9181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksey Yeschenko updated CASSANDRA-9181:
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Issue Type: Improvement (was: Bug)
> Improve index versus secondary index selection
> ----------------------------------------------
>
> Key: CASSANDRA-9181
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9181
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jeremy Hanna
> Labels: 2i
> Fix For: 3.x
>
>
> There is a special case for secondary indexes if you always supply the
> partition key. For example, if you have a family with ID "a456" which has 6
> family members and I have a secondary index on first name. Currently, if I
> do a query like this "select * from families where id = 'a456' and firstname
> = 'alowishus';" you can see from a query trace, that it will first scan the
> entire cluster based on the firstname, then look for the key within that.
> If it's not terribly invasive, I think this would be a valid use case to
> narrow down the results by key first.
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