KYLIN-2794 code review
This closes #78
Project: http://git-wip-us.apache.org/repos/asf/kylin/repo
Commit: http://git-wip-us.apache.org/repos/asf/kylin/commit/c04be637
Tree: http://git-wip-us.apache.org/repos/asf/kylin/tree/c04be637
Diff: http://git-wip-us.apache.org/repos/asf/kylin/diff/c04be637
KYLIN-2794 code review
Project: http://git-wip-us.apache.org/repos/asf/kylin/repo
Commit: http://git-wip-us.apache.org/repos/asf/kylin/commit/a82847ea
Tree: http://git-wip-us.apache.org/repos/asf/kylin/tree/a82847ea
Diff: http://git-wip-us.apache.org/repos/asf/kylin/diff/a82847ea
Branch: refs/he