[dc1.com:21001] > drop table sv_feedback ;
Query: drop table sv_feedback
ERROR:
ImpalaRuntimeException: Error making ‘dropTable‘ RPC to Hive Metastore:
CAUSED BY: MetaException: java.lang.IllegalArgumentException: java.net.UnknownHostException: dc146.yoyosys.com
这个是什么原因导致的?