| --! qt:dataset:src |
| SET hive.vectorized.execution.enabled=false; |
| set hive.mapred.mode=nonstrict; |
| set hive.auto.convert.join=true; |
| set hive.auto.convert.sortmerge.join=true; |
| set hive.optimize.bucketmapjoin = true; |
| set hive.optimize.bucketmapjoin.sortedmerge = true; |
| |
| |
| set hive.exec.reducers.max = 1; |
| set hive.merge.mapfiles=false; |
| set hive.merge.mapredfiles=false; |
| set hive.auto.convert.sortmerge.join.bigtable.selection.policy=org.apache.hadoop.hive.ql.optimizer.LeftmostBigTableSelectorForAutoSMJ; |
| |
| set hive.auto.convert.sortmerge.join.to.mapjoin=true; |
| |
| -- Create two bucketed and sorted tables |
| CREATE TABLE test_table1_n2 (key INT, value STRING) PARTITIONED BY (ds STRING) |
| CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS; |
| CREATE TABLE test_table2_n2 (key INT, value STRING) PARTITIONED BY (ds STRING) |
| CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS; |
| CREATE TABLE test_table3_n2 (key INT, key2 INT, value STRING) PARTITIONED BY (ds STRING) |
| CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS; |
| |
| FROM src |
| INSERT OVERWRITE TABLE test_table1_n2 PARTITION (ds = '1') SELECT * where key < 10; |
| |
| FROM src |
| INSERT OVERWRITE TABLE test_table2_n2 PARTITION (ds = '1') SELECT * where key < 100; |
| |
| -- Insert data into the bucketed table by selecting from another bucketed table |
| -- This should be a map-only operation |
| EXPLAIN |
| INSERT OVERWRITE TABLE test_table3_n2 PARTITION (ds = '1') |
| SELECT a.key, b.key, concat(a.value, b.value) |
| FROM test_table1_n2 a JOIN test_table2_n2 b |
| ON a.key = b.key WHERE a.ds = '1' and b.ds = '1'; |
| |
| INSERT OVERWRITE TABLE test_table3_n2 PARTITION (ds = '1') |
| SELECT a.key, b.key, concat(a.value, b.value) |
| FROM test_table1_n2 a JOIN test_table2_n2 b |
| ON a.key = b.key WHERE a.ds = '1' and b.ds = '1'; |
| |
| select * from test_table3_n2 tablesample (bucket 1 out of 2) s where ds = '1'; |
| select * from test_table3_n2 tablesample (bucket 2 out of 2) s where ds = '1'; |
| |
| -- Insert data into the bucketed table by selecting from another bucketed table |
| -- This should be a map-only operation |
| EXPLAIN |
| INSERT OVERWRITE TABLE test_table3_n2 PARTITION (ds = '1') |
| SELECT b.key, a.key, concat(a.value, b.value) |
| FROM test_table1_n2 a JOIN test_table2_n2 b |
| ON a.key = b.key WHERE a.ds = '1' and b.ds = '1'; |
| |
| INSERT OVERWRITE TABLE test_table3_n2 PARTITION (ds = '1') |
| SELECT b.key, a.key, concat(a.value, b.value) |
| FROM test_table1_n2 a JOIN test_table2_n2 b |
| ON a.key = b.key WHERE a.ds = '1' and b.ds = '1'; |
| |
| select * from test_table3_n2 tablesample (bucket 1 out of 2) s where ds = '1'; |
| select * from test_table3_n2 tablesample (bucket 2 out of 2) s where ds = '1'; |