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https://issues.apache.org/jira/browse/CASSANDRA-4197?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuki Morishita updated CASSANDRA-4197:
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Attachment: 4197-1.1.txt
Patch to set index CF's cache based on parent CF's setting and indexed column's
cardinality.
Here I set the bar to determine "high" cardinality on rows/cols ratio in index
CF. Number of rows in index CF is equal to cardinality, and if the ratio is
greater than 1, then one can determine if indexed column has high cardinality.
> Index caching
> -------------
>
> Key: CASSANDRA-4197
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4197
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Yuki Morishita
> Priority: Minor
> Fix For: 1.1.1
>
> Attachments: 4197-1.1.txt
>
>
> Currently, the "hidden" CFs backing secondary indexes are created with
> Caching.NONE, which can result in slower-than-expected index queries.
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