create table smb_bucket_1(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 1 BUCKETS STORED AS RCFILE; create table smb_bucket_2(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 1 BUCKETS STORED AS RCFILE; create table smb_bucket_3(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 1 BUCKETS STORED AS RCFILE; load data local inpath '../../data/files/smbbucket_1.rc' overwrite into table smb_bucket_1; load data local inpath '../../data/files/smbbucket_2.rc' overwrite into table smb_bucket_2; load data local inpath '../../data/files/smbbucket_3.rc' overwrite into table smb_bucket_3; set hive.optimize.bucketmapjoin = true; set hive.optimize.bucketmapjoin.sortedmerge = true; set hive.input.format = org.apache.hadoop.hive.ql.io.BucketizedHiveInputFormat; -- SORT_QUERY_RESULTS explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a join smb_bucket_2 b on a.key = b.key join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a join smb_bucket_2 b on a.key = b.key join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a left outer join smb_bucket_2 b on a.key = b.key join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a left outer join smb_bucket_2 b on a.key = b.key join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a left outer join smb_bucket_2 b on a.key = b.key left outer join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a left outer join smb_bucket_2 b on a.key = b.key left outer join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a left outer join smb_bucket_2 b on a.key = b.key right outer join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a left outer join smb_bucket_2 b on a.key = b.key right outer join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a left outer join smb_bucket_2 b on a.key = b.key full outer join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a left outer join smb_bucket_2 b on a.key = b.key full outer join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a right outer join smb_bucket_2 b on a.key = b.key join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a right outer join smb_bucket_2 b on a.key = b.key join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a right outer join smb_bucket_2 b on a.key = b.key left outer join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a right outer join smb_bucket_2 b on a.key = b.key left outer join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a right outer join smb_bucket_2 b on a.key = b.key right outer join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a right outer join smb_bucket_2 b on a.key = b.key right outer join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a right outer join smb_bucket_2 b on a.key = b.key full outer join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a right outer join smb_bucket_2 b on a.key = b.key full outer join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a full outer join smb_bucket_2 b on a.key = b.key join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a full outer join smb_bucket_2 b on a.key = b.key join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a full outer join smb_bucket_2 b on a.key = b.key left outer join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a full outer join smb_bucket_2 b on a.key = b.key left outer join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a full outer join smb_bucket_2 b on a.key = b.key right outer join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a full outer join smb_bucket_2 b on a.key = b.key right outer join smb_bucket_3 c on b.key=c.key; explain select /*+mapjoin(a,c)*/ * from smb_bucket_1 a full outer join smb_bucket_2 b on a.key = b.key full outer join smb_bucket_3 c on b.key=c.key; select /*+mapjoin(a,c)*/ * from smb_bucket_1 a full outer join smb_bucket_2 b on a.key = b.key full outer join smb_bucket_3 c on b.key=c.key;