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Posted to commits@cassandra.apache.org by "Caleb Rackliffe (Jira)" <ji...@apache.org> on 2021/05/18 20:58:00 UTC
[jira] [Commented] (CASSANDRA-16092) Add Index Group Interface for
Storage Attached Index
[ https://issues.apache.org/jira/browse/CASSANDRA-16092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17347160#comment-17347160 ]
Caleb Rackliffe commented on CASSANDRA-16092:
---------------------------------------------
[~jasonstack] So I've finished my first pass at review and left my comments for the minor things [inline|https://github.com/apache/cassandra/pull/735]. This is obviously a selected chunk of a much larger project, but there has been reasonable care taken to test, at least at the unit level, the new concepts like queryability and index group management in {{SecondaryIndexManager}} without a real multi-index group in play. Overall, things are looking pretty good!
> 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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