[Bug] Copy from will fail when talble is ao_row #364

ubuntu=# set default_table_access_method to ao_row;
ubuntu=# create table t(a bigint, b text);
ubuntu=# copy t from '/code/words.sql';
ERROR:  MPP detected 3 segment failures, system is reconnected

ubuntu=# set default_table_access_method to ao_row;
ubuntu=# create table t(a bigint, b text);
ubuntu=# copy t from '/code/words.sql';