| set hive.mapred.mode=nonstrict; |
| set hive.exec.reducers.max = 10; |
| set hive.map.groupby.sorted=true; |
| |
| CREATE TABLE T1_n164(key STRING, val STRING) |
| CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS STORED AS TEXTFILE; |
| |
| LOAD DATA LOCAL INPATH '../../data/files/bucket_files/000000_0' INTO TABLE T1_n164; |
| |
| -- perform an insert to make sure there are 2 files |
| INSERT OVERWRITE TABLE T1_n164 select key, val from T1_n164; |
| |
| CREATE TABLE outputTbl1_n35(key int, cnt int); |
| |
| -- The plan should be converted to a map-side group by if the group by key |
| -- matches the sorted key. However, in test mode, the group by wont be converted. |
| EXPLAIN |
| INSERT OVERWRITE TABLE outputTbl1_n35 |
| SELECT key, count(1) FROM T1_n164 GROUP BY key; |
