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https://issues.apache.org/jira/browse/ASTERIXDB-2015?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ali Alsuliman resolved ASTERIXDB-2015.
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Resolution: Done
Fix Version/s: 0.9.4
> Create secondary primary index
> ------------------------------
>
> Key: ASTERIXDB-2015
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2015
> Project: Apache AsterixDB
> Issue Type: Improvement
> Components: IDX - Indexes
> Reporter: Ali Alsuliman
> Assignee: Ali Alsuliman
> Priority: Major
> Fix For: 0.9.4
>
>
> This change is regarding introducing secondary primary index. The secondary
> primary index is a secondary B-Tree that is built on the primary keys of the
> dataset but only stores the {PK} instead of the regular case {SK,PK}. The
> purpose of this secondary is to optimize queries like SELECT count(*).
> Instead of scanning the primary index, the secondary primary index would be
> used to answer such queries.
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