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From "Ali Alsuliman (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ASTERIXDB-2015) Create secondary primary index
Date Thu, 03 Aug 2017 22:56:01 GMT
Ali Alsuliman created ASTERIXDB-2015:
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             Summary: 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


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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