Enable akka cluster mode
support master HA
optimize the imports
HA
add master log
Merge pull request #21 from kkasravi/master

improved handling of cli args including allowing default values and more description usage
master ha
add gitignore
Merge pull request #22 from manuzhang/add_gitignore

add gitignore
master HA
refactor the contants
Refine the cluster message
master HA
fix ha bug
merge with intel-hadoop/gearpump
fix merge issue
fix compile issues
fix command line options for shell commands
fix client app shutdown bug
add more logs