incubator-clerezza-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Reto Bachmann-Gmür (JIRA) <j...@apache.org>
Subject [jira] Commented: (CLEREZZA-194) Replace the integrated SPARQL engine
Date Mon, 26 Apr 2010 10:40:32 GMT

    [ https://issues.apache.org/jira/browse/CLEREZZA-194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12860886#action_12860886
] 

Reto Bachmann-Gmür commented on CLEREZZA-194:
---------------------------------------------

It would be inetersting to have a comparison of the speed for a sparql query directly against
TDB and the same query using clerezza.

> Replace the integrated SPARQL engine
> ------------------------------------
>
>                 Key: CLEREZZA-194
>                 URL: https://issues.apache.org/jira/browse/CLEREZZA-194
>             Project: Clerezza
>          Issue Type: Improvement
>            Reporter: Oliver Strässer
>            Priority: Critical
>
> The Scalability of the integrated SPARQL engine isn't very good.  Some test with big
graphs demonstrate this problem. 
> A Query over a big Graph (120 MB) needs more than 45 seconds with SPARQL. The same "query"
build with graph.filter(triple) calls, needs only 1-2 msec - quite faster. 
> research with Manuel Innerhofer shows, that the problem is the hasnext() method of the
SPARQL  resultset.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message