Advances, Systems and Applications
From: An improved task assignment scheme for Hadoop running in the clouds
RPC = 2.5 | Total number of data blocks | ||||||
---|---|---|---|---|---|---|---|
VPPT = ± 5% | 3000 | 3500 | 4500 | 5500 | 6500 | 7500 | 8500 |
Number of blocks assigned according to the ECT rule | 700.1 | 1199.5 | 2198.2 | 3200.3 | 4196.4 | 5200.1 | 6195.4 |
MPCT of Hadoop (time units) | 185.4 | 187.8 | 163.5 | 151.8 | 149.9 | 141.8 | 135.9 |
MPCT of ECT (time units) | 138.9 | 130.7 | 125.1 | 121.4 | 117.4 | 116.0 | 114.9 |
ECT reduction in MPCT | 25.1% | 30.4% | 23.5% | 20.0% | 21.7% | 18.2% | 15.5% |
NBRP under Hadoop | 423.6 | 427.7 | 571.7 | 665.9 | 742.7 | 878.7 | 984.0 |
NBRP under ECT | 241.2 | 273.3 | 378.4 | 455.3 | 527.5 | 625.1 | 699.8 |
ECT reduction in NBRP | 43.1% | 36.1% | 33.8% | 31.6% | 29.0% | 28.9% | 28.9% |