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From "Ali Alsuliman (JIRA)" <>
Subject [jira] [Assigned] (ASTERIXDB-2015) Create secondary primary index
Date Wed, 31 Oct 2018 22:21:00 GMT


Ali Alsuliman reassigned ASTERIXDB-2015:

    Assignee: Ali Alsuliman

> Create secondary primary index
> ------------------------------
>                 Key: ASTERIXDB-2015
>                 URL:
>             Project: Apache AsterixDB
>          Issue Type: Improvement
>          Components: IDX - Indexes
>            Reporter: Ali Alsuliman
>            Assignee: Ali Alsuliman
>            Priority: Major
> 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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