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From "Zhao Yang (Jira)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-16092) Add Index Group Interface for Storage Attached Index
Date Thu, 02 Sep 2021 04:02:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-16092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17408523#comment-17408523
] 

Zhao Yang commented on CASSANDRA-16092:
---------------------------------------

{quote}We may need to consider pausing this for now, wrapping up the CEP-7 discussion, and
then moving official development to a trunk-based feature branch
{quote}

Agreed we should process with CEP-7 discussion and finalize it, otherwise, we may have to
make API changes again.

> 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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