我是新来的Cassandra和我使用Cassandra3.10，当我要创建一个uda我得到以下错误
OperationTimedOut: errors={'x.x.x.x'}: 'Request timed out while waiting for schema agreement. See session.execute_async and Cluster.max_schema_agree ent_wait.'},last_host=x.x.x.x Warning: schema version mismatch detected; check the schema versions of your nodes in system.local and system.peers 我正在创建的uda是

CREATE FUNCTION state_group_and_total( state map<text, int>, type text, amount int )
CALLED ON NULL INPUT
RETURNS map<text, int>
LANGUAGE java AS '
Integer count = (Integer) state.get(type);  if (count == null) count = amount; else count = count + amount; state.put(type, count); return state; ' ;

CREATE OR REPLACE AGGREGATE group_and_total(text, int) 
SFUNC state_group_and_total 
STYPE map<text, int> 
INITCOND {};