Warning: Shuffle Join JOIN[4][tables = [src, src2]] in Stage 'Stage-1:MAPRED' is a cross product PREHOOK: query: -- current explain select src.key from src join src src2 PREHOOK: type: QUERY POSTHOOK: query: -- current explain select src.key from src join src src2 POSTHOOK: type: QUERY STAGE DEPENDENCIES: Stage-1 is a root stage Stage-0 depends on stages: Stage-1 STAGE PLANS: Stage: Stage-1 Map Reduce Map Operator Tree: TableScan alias: src2 Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE Reduce Output Operator sort order: Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE TableScan alias: src Statistics: Num rows: 58 Data size: 5812 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 58 Data size: 5812 Basic stats: COMPLETE Column stats: NONE value expressions: key (type: string) Reduce Operator Tree: Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {VALUE._col0} 1 outputColumnNames: _col0 Statistics: Num rows: 63 Data size: 6393 Basic stats: COMPLETE Column stats: NONE Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 63 Data size: 6393 Basic stats: COMPLETE Column stats: NONE File Output Operator compressed: false Statistics: Num rows: 63 Data size: 6393 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[4][tables = [src, src2]] in Stage 'Stage-1:MAPRED' is a cross product PREHOOK: query: -- ansi cross join explain select src.key from src cross join src src2 PREHOOK: type: QUERY POSTHOOK: query: -- ansi cross join explain select src.key from src cross join src src2 POSTHOOK: type: QUERY STAGE DEPENDENCIES: Stage-1 is a root stage Stage-0 depends on stages: Stage-1 STAGE PLANS: Stage: Stage-1 Map Reduce Map Operator Tree: TableScan alias: src2 Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE Reduce Output Operator sort order: Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE TableScan alias: src Statistics: Num rows: 58 Data size: 5812 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 58 Data size: 5812 Basic stats: COMPLETE Column stats: NONE value expressions: key (type: string) Reduce Operator Tree: Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {VALUE._col0} 1 outputColumnNames: _col0 Statistics: Num rows: 63 Data size: 6393 Basic stats: COMPLETE Column stats: NONE Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 63 Data size: 6393 Basic stats: COMPLETE Column stats: NONE File Output Operator compressed: false Statistics: Num rows: 63 Data size: 6393 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 PREHOOK: query: -- appending condition is allowed explain select src.key from src cross join src src2 on src.key=src2.key PREHOOK: type: QUERY POSTHOOK: query: -- appending condition is allowed explain select src.key from src cross join src src2 on src.key=src2.key POSTHOOK: type: QUERY STAGE DEPENDENCIES: Stage-1 is a root stage Stage-0 depends on stages: Stage-1 STAGE PLANS: Stage: Stage-1 Map Reduce Map Operator Tree: TableScan alias: src2 Statistics: Num rows: 58 Data size: 5812 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: key is not null (type: boolean) Statistics: Num rows: 29 Data size: 2906 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: key (type: string) sort order: + Map-reduce partition columns: key (type: string) Statistics: Num rows: 29 Data size: 2906 Basic stats: COMPLETE Column stats: NONE TableScan alias: src Statistics: Num rows: 58 Data size: 5812 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: key is not null (type: boolean) Statistics: Num rows: 29 Data size: 2906 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: key (type: string) sort order: + Map-reduce partition columns: key (type: string) Statistics: Num rows: 29 Data size: 2906 Basic stats: COMPLETE Column stats: NONE Reduce Operator Tree: Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {KEY.reducesinkkey0} 1 outputColumnNames: _col0 Statistics: Num rows: 31 Data size: 3196 Basic stats: COMPLETE Column stats: NONE Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 31 Data size: 3196 Basic stats: COMPLETE Column stats: NONE File Output Operator compressed: false Statistics: Num rows: 31 Data size: 3196 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