set hive.input.format = org.apache.hadoop.hive.ql.io.CombineHiveInputFormat; -- This tests that the schema can be changed for binary serde data create table prt(key string, value string) partitioned by (dt string); insert overwrite table prt partition(dt='1') select * from src where key = 238; select * from prt where dt is not null; select key+key, value from prt where dt is not null; alter table prt add columns (value2 string); select key+key, value from prt where dt is not null; select * from prt where dt is not null;