  In this report we investigate the performance of Hadoop clusters, deployed
with separated storage and compute layers, on top of a hypervisor managing a
single physical host. We have analyzed and evaluated the different Hadoop
cluster configurations by running CPU bound and I/O bound workloads. The report
is structured as follows: Section 2 provides a brief description of the
technologies involved in our study. An overview of the experimental platform,
setup test and configurations are presented in Section 3. Our benchmark
methodology is defined in Section 4. The performed experiments together with
the evaluation of the results are presented in Section 5. Finally, Section 6
concludes with lessons learned.
