Description
drop table tmp_viyer_test;
create table tmp_viyer_test (
age string
)
partitioned by (ds string);
from dim_active_users t
insert overwrite table tmp_viyer_test partition (ds='2009-01-01')
select t.age
where t.ds='2009-01-01'
limit 10;
Hive history file=/tmp/viyer/hive_job_log_viyer_200902201958_1534136475.txt
OK
Time taken: 2.175 seconds
OK
Time taken: 0.199 seconds
Total MapReduce jobs = 1
Number of reduce tasks determined at compile time: 1
In order to change the average load for a reducer (in bytes):
set hive.exec.reducers.bytes.per.reducer=<number>
In order to limit the maximum number of reducers:
set hive.exec.reducers.max=<number>
In order to set a constant number of reducers:
set mapred.reduce.tasks=<number>
Starting Job = job_200902201542_0015, Tracking URL = http://tracker2.data.facebook.com:50030/jobdetails.jsp?jobid=job_200902201542_0015
Kill Command = /mnt/vol/hive/sites/test/hadoop/bin/../bin/hadoop job -Dmapred.job.tracker=tracker2.data.facebook.com:50029 -kill job_200902201542_0015
map = 0%, reduce =0%
map = 1%, reduce =0%
map = 2%, reduce =0%
map = 3%, reduce =0%
map = 4%, reduce =0%
map = 5%, reduce =0%
Traceback (most recent call last):
(Killed by keyboard interrupt)
hive
Hive history file=/tmp/viyer/hive_job_log_viyer_200902201959_-2024454477.txt
hive> show partitions tmp_viyer_test;
OK
ds=2009-01-01
Time taken: 2.255 seconds
hive> select t.* from tmp_viyer_test t where t.ds='2009-01-01';
OK
Time taken: 0.633 seconds
hive>