This time, I don't implement for timezone, like Date or Timestamp.
Please Review this seriously.
committed this patch to master. Thank you for your contribution.
The patch was great. Actually, more work would be needed in order to enable users to use date time types. I'll create more issues for them.
FAILURE: Integrated in Tajo-trunk-postcommit #612 (See https://builds.apache.org/job/Tajo-trunk-postcommit/612/)
TAJO-61: Implement Time Datum Type. (DaeMyung Kang via hyunsik) (hyunsik: https://git-wip-us.apache.org/repos/asf?p=incubator-tajo.git&a=commit&h=2ff0eeaccb1ff37c5f54d1ac8aafedda7bdf6855)