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https://issues.apache.org/jira/browse/CASSANDRA-16092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17191625#comment-17191625
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ZhaoYang commented on CASSANDRA-16092:
--------------------------------------
I have ported [Index interface
changes|https://github.com/apache/cassandra/pull/735] for Storage Attached
Index:
* {{Index#Group}} to manage lifecycle of multiple indexes that can communicate
with each other.
* {{Index#QueryPlan}} to provide a set of indexes that can work together for a
given query.
* {{Index#Searcher}} to perform actual index searching.
* Enhanced {{SSTableFlushObserver}} to pass partition deletion, static row,
unfilter separately.
* Moved {{UpdateTransaction}} into {{CFS}} so that we can make sure memtable
and index memtable are in-sync.
cc [~adelapena] [~maedhroz]
> 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: ZhaoYang
> Assignee: ZhaoYang
> Priority: Normal
>
> [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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