Working, some bugs to fix
Now it's running good

Only not getting the right result
Optional value will be lost?
Worker side when to terminate?
Remove not used part
Fix Socket Exception bug
Socket Exception bug fixed permanently.

Add map combiner.
Merge remote-tracking branch 'origin/merge_hsong' into merge

Conflicts:
	.gitignore
	FalconClientProto/output
	FalconWorker/.classpath
	FalconWorker/bin/MonitorTableCreator.class
	FalconWorker/bin/TableCreator.class
	FalconWorker/bin/WorkerThread.class

Merge from merge_hsong >> merge