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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2433) RDF and SPARQL with HBase - Features and design specs
Date Tue, 13 Apr 2010 05:40:49 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12856308#action_12856308
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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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