TAJO-947: ColPartitionStoreExec can cause URISyntaxException due to special characters. (Mai Hai Thanh via hyunsik)
TAJO-995: HiveMetaStoreClient wrapper should retry the connection. (jinho)

Closes #108
Merge branch 'master' of http://git-wip-us.apache.org/repos/asf/tajo into index_support