Hi again Pascal That is realy very helpful. I don’t know how can I thank you.
I have another question, do I need to create a new custom input format? I do not think so. I can use jason format because the other edge values i will set them in compute function. do you agree with me. Thank you so so much Rana On Mar 25, 2014, at 2:42 AM, Pascal Jäger <pas...@pascaljaeger.de> wrote: > Hi Rana, > > all you need to do is writing your own EdgeValue and VertexValue class by > implementing the Writable Interface. > You can use any field you like. Just make sure you write or read them in the > Writeable methods. > > Here’s VertexValue I use (There may be better ways for writing list, but it > works just fine) > > http://pastebin.com/VpMVFuuc > > In your compute method get the VertexValue with vertex.getValue() and apply > your changes. That’s it. > Whatever you write into it in step one, you will be able to read or modify in > step two. > > Regards > > Pascal > > > Am 25.03.2014 um 07:14 schrieb Rana Althunyan <ranoo...@gmail.com>: > >> Hello Pankaj Malhotra, >> >> Yes, I need to assign more than values to the edge. I need the edge has >> [flow, capacity, distinction, source] >> You says I need to create a new class type for edge, How can I pass it to >> json class and how can I make json class read my new edge object. >> >> I need to submit my code next week, so any answer or recommendation will >> definitely help. >> >> thanks >> Rana >> >> On Mar 24, 2014, at 7:29 AM, Pankaj Malhotra <pankajiit...@gmail.com> wrote: >> >>> If I get your point-1 right, you want to have a vertex class type other >>> than the ones available, for example: Text. If this is what you want, you >>> can have a class having as many fields as you want. Then convert the >>> objects of that class to Json objects using Gson for example. Then, you can >>> use the Json string to set the fields of the Text class. >>> >>> >>> On 22 March 2014 04:50, Rana Althunyan <ranoo...@gmail.com> wrote: >>> Hello experts, >>> > I really need your help. I am new to Giraph. I have project on pregel >>> > paper, and I need to implement One algorithm via Apache Giraph.The >>> > algorithm is push-relabel flow algorithm. Actually when I started to >>> > adapt the algorithm to fit to Giraph I found some problems. I will list >>> > them. >>> > >>> > 1- Because any type of data structure are not allowed in Giraph how can I >>> > store excess flow and distance value for each vertex. >>> > 2- When the excess value becomes zero for any vertex, I wanna keep vertex >>> > flow during future supersteps even if the vertex received messages. >>> > 3- The last point, when I want to send a flow to a vertex, i need store >>> > two values of residual graph the remaining value from the edge capacity >>> > and the amount of flow that we use so far. How can I do that. How can I >>> > keep these two values for each vertex in the graph. >>> > >>> > these following questions may are easy for you .. >>> > 4- How can I determine the last vertex as a sink. >>> > 5- How can I get the number of all vertexes from the input file . >>> > >>> > I know I have written many question.I searched a lot in the Internet, but >>> > I did not find any discussion regards to this algorithm >>> > >>> > sorry and thank you.I appreciate any help or recommendations >>> > Rana >>> >>> >> >
