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From Puneet Jain <>
Subject java.lang.OutOfMemoryError: Java heap space
Date Mon, 21 Oct 2013 16:33:59 GMT

I have a graph of size 2B edges, 200M vertices. I am trying to compute
pagerank of this graph. I have 10 node cluster, 8G memory.

I am unable to run giraph job successfully. My question is more generic:

1. How should one choose right amount of heap space? .. is there a way of
telling giraph job not to pick too much computation, if it can't handle in

2. Does out-of-core message feature functions as expected ?


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