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From "Caleb Rackliffe (Jira)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-16092) Add Index Group Interface for Storage Attached Index
Date Tue, 31 Aug 2021 05:23:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-16092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17407076#comment-17407076
] 

Caleb Rackliffe commented on CASSANDRA-16092:
---------------------------------------------

[~jasonstack] Dropped a couple more minor nits in the PR, but otherwise LGTM.

> Add Index Group Interface for Storage Attached Index
> ----------------------------------------------------
>
>                 Key: CASSANDRA-16092
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16092
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Feature/SASI
>            Reporter: Zhao Yang
>            Assignee: Zhao Yang
>            Priority: Normal
>             Fix For: 4.x
>
>
> [Index group|https://github.com/datastax/cassandra/blob/storage_attached_index/src/java/org/apache/cassandra/index/Index.java#L634]
interface allows:
> * indexes on the same table to receive centralized lifecycle events called secondary
index groups. Sharing of data between multiple column indexes on the same table allows SAI
disk usage to realise significant space savings over other index implementations.
> * index-group to analyze user query and provide a query plan that leverages all available
indexes within the group.



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