Thank you Sergey, This is exactly what I am looking for. I would like to run multiple computation classes following each other, such that each computation class will execute until convergence.
I think may be the GiraphJob class may help. Can I use setComputationClass to change the computation class in the configuration object then construct a new GiraphJob and run it? I am not certain when exactly all vertex and edge data are going to be deleted from memory. Thanks, -Khaled *setComputationClass <https://giraph.apache.org/apidocs/org/apache/giraph/conf/GiraphConfiguration.html#setComputationClass(java.lang.Class)>* , but I am not certain how to pass multiple computation classes there. On Wed, Jun 3, 2015 at 1:34 PM, Sergey Edunov <edu...@gmail.com> wrote: > Hi Khaled, > > As far as I know, InMemory input and output formats are only used in test > cases. > Can you elaborate more on why do you want to use I/O formats? You can use > different computation classes within one application and you don't need to > do I/O between them. All intermediate results can be kept in vertex and > edge data. > > Regards, > Sergey Edunov > > On Tue, Jun 2, 2015 at 12:46 PM, Khaled Ammar <khaled.am...@gmail.com> > wrote: > >> Hi all, >> >> There are InMemory input and output format for giraph. These could be >> useful when a specific computation should be executed until convergence and >> then another computation is needed. Instead of writing intermediate results >> to HDFS and read it again, InMemoryVertex format sounds very convenient. >> However, I could not figure out how to use it in a proper Computation or >> GiraphBenchmark class. >> >> I appreciate if any one can share his/her experience using this format. >> >> *Link to the InMemoryVertexOutputFormat class :* >> >> https://giraph.apache.org/apidocs/org/apache/giraph/io/formats/InMemoryVertexOutputFormat.html#InMemoryVertexOutputFormat() >> >> -- >> Thanks, >> -Khaled >> > > -- Thanks, -Khaled
