Hi Khaled,
Unfortunately, there is no official way to read data between supersteps
right now. You can read all the data in the beginning and just keep it in
memory. And you can write output between supersteps. But reading between
supersteps is not supported yet. It has been in our TODO list for a
Hi Sergey,
Thank you for your clarification. I noticed Igor email the other day,
sounds exciting. I am looking forward to it.
*One more question please*, What is the best approach to load data between
supersteps?
I understand that it is possible to create a FileSystem object, open a
file, read
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
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
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
