Hi there. I am implementing my own algorithm in Giraph using the Latest 
features from the trunk branch. For every iteration I am setting the 
Computation class and the combiner class. But the problem is that in one of the 
iterations, the number of messages sent are too big. So i am using out of core 
messages by passing the following parameter
-D giraph.useOutOfCoreMessages=true

I have the following questions:
1. Can we use the following parameters:
-D giraph.useOutOfCoreMessages=true and -D giraph.useBigDataIOForMessages=true 
at the same time.

2. Also whenever I use the -D giraph.useOutOfCoreMessages=true, the combiners 
don't run.
I am using MasterCompute class to set the combiner and the computation type for 
every iteration since I am using different in message and out message in every 
super step. But the combiners don't run even if I set them on the master 
compute when i use out of core messages.

Please Help me out.
Thanks in advance.
Ameya Vilankar
Software Engineer Intern
Zynga

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