VI. RESULT ANALYSIS
The performance of two deployed Hadoop clusters were
analysed and compared the three different Hadoop
benchmarks namely TestDFSIO, TeraSort and Pi. All these
benchmarks were executed on both clusters rigorously. Fig.6
and Table IV shows the performance of two clusters in terms
of elapsed time for the three benchmarks. TeraSort consists of
3 steps data generation by Teragen, then sorting of data by
Terasort and finally validation with Teravalidate. The data
used in this benchmark is 3GB. Terasort, Teravalidate
performd well on OpenStack based cloud. However the
Tergen performed slightly better on the virtualized cluster.
The TestDFSIO has substantially better performance on
OpenStack based cluster as compare to the virtualized cluster.
Third benchmark executed on the clusters is Pi. Experiments
indicate that Pi performance is better on virtualized cluster as
compared to the OpenStack cloud.