--! qt:dataset:src | |
create external table result_n0(key string) location "${system:test.tmp.dir}/result_n0"; | |
set mapreduce.job.reduces=2; | |
insert overwrite directory "${system:test.tmp.dir}/result_n0" | |
select key from src group by key; | |
select count(*) from result_n0; | |
set mapreduce.job.reduces=1; | |
insert overwrite directory "${system:test.tmp.dir}/result_n0" | |
select key from src group by key; | |
select count(*) from result_n0; | |
drop table result_n0; |