TRAFODION-3086 DDL on Hive objs: use database and msck support -- traf "set schema hive.<sch>" now behaves the same as Hive "use <db>". 1) <sch> is validated to exist at set schema time. 2) <sch> is set in Hive environment for that session. Any unqualified object reference in ddl uses that default schema (database)
-- added support for msck (meta store check) command. This command repairs database by refreshing untracked files/partitions in hive metadata.