Merge pull request #1 from dianping/cosmos-hadoop-0.9.0

Cosmos hadoop 0.9.0
bugfix for HIVE-3063 :drop partition for non-string columns is failing.
bugfix for HIVE-3076: drop partition does not work for non-partition
columns.
bugfix for HIVE-3203: Drop partition throws NPE if table doesn't exist.
see : https://issues.apache.org/jira/browse/HIVE-3203
Merge pull request #6 from zhuguangbin/cosmos-hadoop-0.9.0

Cosmos hadoop 0.9.0