fix the bet vallid and checkpoint bug.........
Merge remote-tracking branch 'remotes/spark/workspace'
modify checkpoint bugs

Signed-off-by: franklin <flin1866@gmail.com>
Merge remote-tracking branch 'remotes/spark/workspace'

Conflicts:
	src/main.cpp

modify checkpoint bugs
Signed-off-by: franklin <flin1866@gmail.com>
improve the debug print function. add multiple user filter files.