drop table and materialized view frequently get error over time

    when i create table and materialized view,then i drop it, if i drop it frequently it will got error: "no response received from cassandra within timeout period",for example：

 for i=0; i<100; i++ {            

          create table;            

          create materialized view;          

          drop materialized view;          

          drop table;

how can i solve it ?