Warning: Shuffle Join JOIN[8][tables = [src1, src2]] in Work 'Reducer 2' is a cross product PREHOOK: query: -- SORT_BEFORE_DIFF EXPLAIN SELECT src1.key as k1, src1.value as v1, src2.key as k2, src2.value as v2 FROM (SELECT * FROM src WHERE src.key < 10) src1 JOIN (SELECT * FROM src WHERE src.key < 10) src2 SORT BY k1, v1, k2, v2 PREHOOK: type: QUERY POSTHOOK: query: -- SORT_BEFORE_DIFF EXPLAIN SELECT src1.key as k1, src1.value as v1, src2.key as k2, src2.value as v2 FROM (SELECT * FROM src WHERE src.key < 10) src1 JOIN (SELECT * FROM src WHERE src.key < 10) src2 SORT BY k1, v1, k2, v2 POSTHOOK: type: QUERY STAGE DEPENDENCIES: Stage-1 is a root stage Stage-0 depends on stages: Stage-1 STAGE PLANS: Stage: Stage-1 Spark Edges: Reducer 2 <- Map 1 (PARTITION-LEVEL SORT, 1), Map 4 (PARTITION-LEVEL SORT, 1) Reducer 3 <- Reducer 2 (SORT, 4) #### A masked pattern was here #### Vertices: Map 1 Map Operator Tree: TableScan alias: src Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: (key < 10) (type: boolean) Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE Select Operator expressions: key (type: string), value (type: string) outputColumnNames: _col0, _col1 Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string), _col1 (type: string) Map 4 Map Operator Tree: TableScan alias: src Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: (key < 10) (type: boolean) Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE Select Operator expressions: key (type: string), value (type: string) outputColumnNames: _col0, _col1 Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string), _col1 (type: string) Reducer 2 Reduce Operator Tree: Join Operator condition map: Inner Join 0 to 1 keys: 0 1 outputColumnNames: _col0, _col1, _col2, _col3 Statistics: Num rows: 182 Data size: 1939 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: _col0 (type: string), _col1 (type: string), _col2 (type: string), _col3 (type: string) sort order: ++++ Statistics: Num rows: 182 Data size: 1939 Basic stats: COMPLETE Column stats: NONE Reducer 3 Reduce Operator Tree: Select Operator expressions: KEY.reducesinkkey0 (type: string), KEY.reducesinkkey1 (type: string), KEY.reducesinkkey2 (type: string), KEY.reducesinkkey3 (type: string) outputColumnNames: _col0, _col1, _col2, _col3 Statistics: Num rows: 182 Data size: 1939 Basic stats: COMPLETE Column stats: NONE File Output Operator compressed: false Statistics: Num rows: 182 Data size: 1939 Basic stats: COMPLETE Column stats: NONE table: input format: org.apache.hadoop.mapred.TextInputFormat output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe Stage: Stage-0 Fetch Operator limit: -1 Processor Tree: ListSink Warning: Shuffle Join JOIN[8][tables = [src1, src2]] in Work 'Reducer 2' is a cross product PREHOOK: query: EXPLAIN FORMATTED SELECT src1.key as k1, src1.value as v1, src2.key as k2, src2.value as v2 FROM (SELECT * FROM src WHERE src.key < 10) src1 JOIN (SELECT * FROM src WHERE src.key < 10) src2 SORT BY k1, v1, k2, v2 PREHOOK: type: QUERY POSTHOOK: query: EXPLAIN FORMATTED SELECT src1.key as k1, src1.value as v1, src2.key as k2, src2.value as v2 FROM (SELECT * FROM src WHERE src.key < 10) src1 JOIN (SELECT * FROM src WHERE src.key < 10) src2 SORT BY k1, v1, k2, v2 POSTHOOK: type: QUERY #### A masked pattern was here #### Warning: Shuffle Join JOIN[8][tables = [src1, src2]] in Work 'Reducer 2' is a cross product PREHOOK: query: SELECT src1.key as k1, src1.value as v1, src2.key as k2, src2.value as v2 FROM (SELECT * FROM src WHERE src.key < 10) src1 JOIN (SELECT * FROM src WHERE src.key < 10) src2 SORT BY k1, v1, k2, v2 PREHOOK: type: QUERY PREHOOK: Input: default@src #### A masked pattern was here #### POSTHOOK: query: SELECT src1.key as k1, src1.value as v1, src2.key as k2, src2.value as v2 FROM (SELECT * FROM src WHERE src.key < 10) src1 JOIN (SELECT * FROM src WHERE src.key < 10) src2 SORT BY k1, v1, k2, v2 POSTHOOK: type: QUERY POSTHOOK: Input: default@src #### A masked pattern was here #### 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 0 val_0 2 val_2 0 val_0 2 val_2 0 val_0 2 val_2 0 val_0 4 val_4 0 val_0 4 val_4 0 val_0 4 val_4 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 8 val_8 0 val_0 8 val_8 0 val_0 8 val_8 0 val_0 9 val_9 0 val_0 9 val_9 0 val_0 9 val_9 2 val_2 0 val_0 2 val_2 0 val_0 2 val_2 0 val_0 2 val_2 2 val_2 2 val_2 4 val_4 2 val_2 5 val_5 2 val_2 5 val_5 2 val_2 5 val_5 2 val_2 8 val_8 2 val_2 9 val_9 4 val_4 0 val_0 4 val_4 0 val_0 4 val_4 0 val_0 4 val_4 2 val_2 4 val_4 4 val_4 4 val_4 5 val_5 4 val_4 5 val_5 4 val_4 5 val_5 4 val_4 8 val_8 4 val_4 9 val_9 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 0 val_0 5 val_5 2 val_2 5 val_5 2 val_2 5 val_5 2 val_2 5 val_5 4 val_4 5 val_5 4 val_4 5 val_5 4 val_4 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 5 val_5 8 val_8 5 val_5 8 val_8 5 val_5 8 val_8 5 val_5 9 val_9 5 val_5 9 val_9 5 val_5 9 val_9 8 val_8 0 val_0 8 val_8 0 val_0 8 val_8 0 val_0 8 val_8 2 val_2 8 val_8 4 val_4 8 val_8 5 val_5 8 val_8 5 val_5 8 val_8 5 val_5 8 val_8 8 val_8 8 val_8 9 val_9 9 val_9 0 val_0 9 val_9 0 val_0 9 val_9 0 val_0 9 val_9 2 val_2 9 val_9 4 val_4 9 val_9 5 val_5 9 val_9 5 val_5 9 val_9 5 val_5 9 val_9 8 val_8 9 val_9 9 val_9