KYLIN-2660 'Load Hive Table From Tree' page always show 'Loading Databases' without error tips, when hive error occurs and can not be connected.
KYLIN-2660 'Load Hive Table From Tree' page always show 'Loading Databases' without error tips, when hive error occurs and can not be connected.

Signed-off-by: Billy Liu <cfa021d63eda38fe6b12eac9ebbf07be3575033b@apache.org>

apache/kylin,apache/incubator-kylin,apache/kylin,apache/kylin,apache/incubator-kylin,apache/kylin,apache/incubator-kylin,apache/incubator-kylin,apache/incubator-kylin,apache/kylin,apache/kylin,apache/incubator-kylin,apache/kylin