asterixdb-notifications mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Murtadha Hubail (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (ASTERIXDB-2015) Create secondary primary index
Date Tue, 31 Oct 2017 16:35:00 GMT

     [ https://issues.apache.org/jira/browse/ASTERIXDB-2015?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Murtadha Hubail reassigned ASTERIXDB-2015:
------------------------------------------

    Assignee:     (was: Murtadha Hubail)

> 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.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

Mime
View raw message