Github user balidani commented on the pull request:
https://github.com/apache/flink/pull/408#issuecomment-84033474
@vasia was completely right about the GGC algorithm, I misunderstood what
it was supposed to do. I implemented the correct version, but it turns out,
after reading the GAS paper that this algorithm has problems when executed
synchronously (e.g., values can oscillate between 0 and 1). We had a discussion
and decided to add a Connected Components example instead, as well as a
PageRank example, which I will implement shortly.
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