[Bigdata-developers] Query regarding detailed execution cost of bigdata

[Jyoti L. <jy...@ii...>]

Dear All,

I loaded the following data into BigData in RDR (by creating namespace
in mode RDR) using BigData workbench
(http://www.bigdata.com/download):

@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
<x> rdf:type rdf:Statement .
<x> rdf:subject <Tolkien> .
<x> rdf:predicate <wrote> .
<x> rdf:object <LordOfTheRings> .
<x> <said> <Wikipedia> .

After which I queried bigdata using:
select ?tolkien ?rings where { ?x
<http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?tolkien. ?x
<http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <wrote>. ?x
<http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?rings. ?x <said>
<Wikipedia>. }

Bigdata workbench reported the execution time of this query, but I am
also interested in getting the detailed breakdown i.e. query optimizer
cost and query runtime cost. Is it possible to get such a detailed
breakdown. If yes, how?

Thanks & Regards,
Jyoti Leeka
PhD Student
IIIT-Delhi
India