Hive元数据信息默认使用derby存储，最好调整为mysql，postgre等rdbms。
Hive元数据存常用的一些表：
select * from DBS;
select * from COLUMNS_V2;
select * from PARTITIONS;
select * from PARTITION_KEYS;
select * from TABLE_PARAMS;
select * from TBLs;
select * from SDS;
Hive元数据存常用的一些表：
select * from DBS;
select * from COLUMNS_V2;
select * from PARTITIONS;
select * from PARTITION_KEYS;
select * from TABLE_PARAMS;
select * from TBLs;
select * from SDS;