I dont think that you need so much pages - most of 150B pages will be never ever shown displayed at SERP.
124 karma · joined February 6, 2014
Spark does not need Hadoop - you can run it also with Mesos or in local mode..
2. Yes, Spark was/is buggy.
3. For me Spark is really paradigm shift, next generation framework compared to M/R
The paragraph is about another dataset, not the Brno city dataset.