Optimized Speculative Execution to Improve Performance of MapReduce Jobs on Virtualized Computing Environment

Table 4

Test Applications.

Name	Major resource used	Introduction
TeraSort	I/O	Sort the input data into a total order
TeraGen	I/O	Generate and write data into system
Grep	I/O	Extract matching regular expression
WordCount	I/O	Count words in the input file
PiEst	CPU	Estimate Pi
Bayes	CPU	Construct Bayes classifiers
Matrix	CPU	Matrix add and multiplication
gzip	mixed	Compress text files
Bzip2	mixed	Compress text files
povray	mixed	A frame rendering tool for 3-D graphics