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From Lukas Nalezenec <>
Subject Re: very important question about partitioning and final combination
Date Fri, 06 Feb 2015 20:03:12 GMT
It looks like you need some graph database. Maybe something like neo4j 
would be better for you.


On 6.2.2015 16:59, Carmen Manzulli wrote:
> Hi experts,
> i've just two conceptual questions about giraph:
> 1) because of giraph works on hadoop, if i have more informations 
> about a vertex in different partitions and also in different machines, 
> for example, for a social graph or a person graph, about "Alan" 
> (source id) who is (edge value) 24 years old (target id) and, on 
> another machine, there is a partition with "Alan"(source id) who 
> lives(edge value) in Italy(target id), and so on: how giraph will  
> consider these relations if i ask for all people who live in Italy and 
> are 24 years old ?
> 2) if giraph doesn't consider relations between same vertex in 
> different partitions and machines when it runs compute() methos, is it 
> possible to write a  function and make it executable after all 
> iterations by giraph, so when all vertices are inactive?
> thanks and regards,
> Carmen.

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