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https://issues.apache.org/jira/browse/CASSANDRA-16052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17938058#comment-17938058
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Caleb Rackliffe commented on CASSANDRA-16052:
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[~guminy] We've discussed this a bit in CASSANDRA-18493. I've been focused on
general performance and usability concerns for SAI lately under the umbrella of
CASSANDRA-19224.
> CEP-7 Storage Attached Indexes (Phase 1)
> ----------------------------------------
>
> Key: CASSANDRA-16052
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16052
> Project: Apache Cassandra
> Issue Type: Epic
> Components: Feature/2i Index, Feature/SAI
> Reporter: Zhao Yang
> Assignee: Caleb Rackliffe
> Priority: Normal
> Labels: SAI
> Fix For: 5.0-alpha1, 5.0
>
> Time Spent: 2h
> Remaining Estimate: 0h
>
> [CEP|https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-7%3A+Storage+Attached+Index]
> - A new index implementation, called Storage
> Attached Index(SAI), based on the advancement made by SASI.
> * disk usage by sharing of common data between multiple column indexes on
> the same table and better compression of on-disk structures.
> * numeric range query performance with modified KDTree and collection type
> support.
> * compaction performance and stability for larger data set.
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