SET hive.vectorized.execution.enabled=false;
set hive.strict.checks.bucketing=false;

set hive.mapred.mode=nonstrict;
CREATE TABLE srcbucket_mapjoin_n0(key int, value string) CLUSTERED BY (key) INTO 2 BUCKETS STORED AS TEXTFILE;
load data local inpath '../../data/files/bmj/000000_0' INTO TABLE srcbucket_mapjoin_n0;
load data local inpath '../../data/files/bmj/000001_0' INTO TABLE srcbucket_mapjoin_n0;

CREATE TABLE srcbucket_mapjoin_part_n0 (key int, value string) partitioned by (ds string) CLUSTERED BY (key) INTO 4 BUCKETS STORED AS TEXTFILE;
load data local inpath '../../data/files/bmj/000000_0' INTO TABLE srcbucket_mapjoin_part_n0 partition(ds='2008-04-08');
load data local inpath '../../data/files/bmj/000001_0' INTO TABLE srcbucket_mapjoin_part_n0 partition(ds='2008-04-08');
load data local inpath '../../data/files/bmj/000002_0' INTO TABLE srcbucket_mapjoin_part_n0 partition(ds='2008-04-08');
load data local inpath '../../data/files/bmj/000003_0' INTO TABLE srcbucket_mapjoin_part_n0 partition(ds='2008-04-08');
load data local inpath '../../data/files/bmj/000000_0' INTO TABLE srcbucket_mapjoin_part_n0 partition(ds='2008-04-09');
load data local inpath '../../data/files/bmj/000001_0' INTO TABLE srcbucket_mapjoin_part_n0 partition(ds='2008-04-09');
load data local inpath '../../data/files/bmj/000002_0' INTO TABLE srcbucket_mapjoin_part_n0 partition(ds='2008-04-09');
load data local inpath '../../data/files/bmj/000003_0' INTO TABLE srcbucket_mapjoin_part_n0 partition(ds='2008-04-09');

CREATE TABLE srcbucket_mapjoin_part_2 (key int, value string) partitioned by (ds string) CLUSTERED BY (key) INTO 2 BUCKETS STORED AS TEXTFILE;
load data local inpath '../../data/files/bmj2/000000_0' INTO TABLE srcbucket_mapjoin_part_2 partition(ds='2008-04-08');
load data local inpath '../../data/files/bmj2/000001_0' INTO TABLE srcbucket_mapjoin_part_2 partition(ds='2008-04-08');
load data local inpath '../../data/files/bmj2/000000_0' INTO TABLE srcbucket_mapjoin_part_2 partition(ds='2008-04-09');
load data local inpath '../../data/files/bmj2/000001_0' INTO TABLE srcbucket_mapjoin_part_2 partition(ds='2008-04-09');

create table bucketmapjoin_hash_result_1 (key bigint , value1 bigint, value2 bigint);
create table bucketmapjoin_hash_result_2 (key bigint , value1 bigint, value2 bigint);
set hive.cbo.enable=false;
set hive.optimize.bucketmapjoin = true;
create table bucketmapjoin_tmp_result (key string , value1 string, value2 string);

explain extended
insert overwrite table bucketmapjoin_tmp_result 
select /*+mapjoin(a)*/ a.key, a.value, b.value 
from srcbucket_mapjoin_n0 a join srcbucket_mapjoin_part_n0 b 
on a.key=b.key;

insert overwrite table bucketmapjoin_tmp_result 
select /*+mapjoin(a)*/ a.key, a.value, b.value 
from srcbucket_mapjoin_n0 a join srcbucket_mapjoin_part_n0 b 
on a.key=b.key;

select count(1) from bucketmapjoin_tmp_result;
insert overwrite table bucketmapjoin_hash_result_1
select sum(hash(key)), sum(hash(value1)), sum(hash(value2)) from bucketmapjoin_tmp_result;

set hive.optimize.bucketmapjoin = false;
insert overwrite table bucketmapjoin_tmp_result 
select /*+mapjoin(a)*/ a.key, a.value, b.value 
from srcbucket_mapjoin_n0 a join srcbucket_mapjoin_part_n0 b 
on a.key=b.key;

select count(1) from bucketmapjoin_tmp_result;
insert overwrite table bucketmapjoin_hash_result_2
select sum(hash(key)), sum(hash(value1)), sum(hash(value2)) from bucketmapjoin_tmp_result;

select a.key-b.key, a.value1-b.value1, a.value2-b.value2
from bucketmapjoin_hash_result_1 a left outer join bucketmapjoin_hash_result_2 b
on a.key = b.key;


set hive.optimize.bucketmapjoin = true;
explain extended
insert overwrite table bucketmapjoin_tmp_result 
select /*+mapjoin(a)*/ a.key, a.value, b.value 
from srcbucket_mapjoin_n0 a join srcbucket_mapjoin_part_2 b 
on a.key=b.key;

insert overwrite table bucketmapjoin_tmp_result 
select /*+mapjoin(a)*/ a.key, a.value, b.value 
from srcbucket_mapjoin_n0 a join srcbucket_mapjoin_part_2 b 
on a.key=b.key;

select count(1) from bucketmapjoin_tmp_result;
insert overwrite table bucketmapjoin_hash_result_1
select sum(hash(key)), sum(hash(value1)), sum(hash(value2)) from bucketmapjoin_tmp_result;

set hive.optimize.bucketmapjoin = false;
insert overwrite table bucketmapjoin_tmp_result 
select /*+mapjoin(a)*/ a.key, a.value, b.value 
from srcbucket_mapjoin_n0 a join srcbucket_mapjoin_part_2 b 
on a.key=b.key;

select count(1) from bucketmapjoin_tmp_result;
insert overwrite table bucketmapjoin_hash_result_2
select sum(hash(key)), sum(hash(value1)), sum(hash(value2)) from bucketmapjoin_tmp_result;

select a.key-b.key, a.value1-b.value1, a.value2-b.value2
from bucketmapjoin_hash_result_1 a left outer join bucketmapjoin_hash_result_2 b
on a.key = b.key;