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Message-ID: <21438855.16071271137249826.JavaMail.jira@thor>
Date: Tue, 13 Apr 2010 01:40:49 -0400 (EDT)
From: "Hyunsik Choi (JIRA)" <jira@apache.org>
To: hbase-issues@hadoop.apache.org
Subject: [jira] Commented: (HBASE-2433) RDF and SPARQL with HBase - Features
 and design specs
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    [ https://issues.apache.org/jira/browse/HBASE-2433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12856308#action_12856308 ] 

Hyunsik Choi commented on HBASE-2433:
-------------------------------------

I think that interactive queries may be impossible because RDF queries commonly perform joins and doing joins against large-scale RDF data sets needs MapReduce jobs. But, MR is a batch processing and has too slow response time to provide interactive queries. It would be good to target analytical processing on large-scale RDF data.

> RDF and SPARQL with HBase - Features and design specs
> -----------------------------------------------------
>
>                 Key: HBASE-2433
>                 URL: https://issues.apache.org/jira/browse/HBASE-2433
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: contrib
>            Reporter: Amandeep Khurana
>            Assignee: Amandeep Khurana
>
> This is for scoping out the feature set and the design specifications for the RDF store over HBase and the query capability it will have. I'll be posting some initial ideas soon.
> The key goals for this layer are:
> 1. Scalability
> 2. Support for interactive queries (this one seems to be the biggest challenge)
> We would need to define the subset of queries we will support. We'll probably begin with SELECT queries.

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