PREHOOK: query: CREATE TABLE dest_j1(key INT, cnt INT) PREHOOK: type: CREATETABLE POSTHOOK: query: CREATE TABLE dest_j1(key INT, cnt INT) POSTHOOK: type: CREATETABLE POSTHOOK: Output: default@dest_j1 PREHOOK: query: EXPLAIN INSERT OVERWRITE TABLE dest_j1 SELECT /*+ MAPJOIN(x) */ x.key, count(1) FROM src1 x JOIN src y ON (x.key = y.key) group by x.key PREHOOK: type: QUERY POSTHOOK: query: EXPLAIN INSERT OVERWRITE TABLE dest_j1 SELECT /*+ MAPJOIN(x) */ x.key, count(1) FROM src1 x JOIN src y ON (x.key = y.key) group by x.key POSTHOOK: type: QUERY ABSTRACT SYNTAX TREE: (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_TABREF (TOK_TABNAME src1) x) (TOK_TABREF (TOK_TABNAME src) y) (= (. (TOK_TABLE_OR_COL x) key) (. (TOK_TABLE_OR_COL y) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_TAB (TOK_TABNAME dest_j1))) (TOK_SELECT (TOK_HINTLIST (TOK_HINT TOK_MAPJOIN (TOK_HINTARGLIST x))) (TOK_SELEXPR (. (TOK_TABLE_OR_COL x) key)) (TOK_SELEXPR (TOK_FUNCTION count 1))) (TOK_GROUPBY (. (TOK_TABLE_OR_COL x) key)))) STAGE DEPENDENCIES: Stage-5 is a root stage Stage-1 depends on stages: Stage-5 Stage-2 depends on stages: Stage-1 Stage-0 depends on stages: Stage-2 Stage-3 depends on stages: Stage-0 STAGE PLANS: Stage: Stage-5 Map Reduce Local Work Alias -> Map Local Tables: x Fetch Operator limit: -1 Alias -> Map Local Operator Tree: x TableScan alias: x HashTable Sink Operator condition expressions: 0 {key} 1 handleSkewJoin: false keys: 0 [Column[key]] 1 [Column[key]] Position of Big Table: 1 Stage: Stage-1 Map Reduce Alias -> Map Operator Tree: y TableScan alias: y Map Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {key} 1 handleSkewJoin: false keys: 0 [Column[key]] 1 [Column[key]] outputColumnNames: _col0 Position of Big Table: 1 File Output Operator compressed: false GlobalTableId: 0 table: input format: org.apache.hadoop.mapred.SequenceFileInputFormat output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat Local Work: Map Reduce Local Work Stage: Stage-2 Map Reduce Alias -> Map Operator Tree: file:/tmp/sdong/hive_2011-02-10_16-04-53_624_2366108451879503293/-mr-10002 Select Operator expressions: expr: _col0 type: string outputColumnNames: _col0 Select Operator expressions: expr: _col0 type: string outputColumnNames: _col0 Group By Operator aggregations: expr: count(1) bucketGroup: false keys: expr: _col0 type: string mode: hash outputColumnNames: _col0, _col1 Reduce Output Operator key expressions: expr: _col0 type: string sort order: + Map-reduce partition columns: expr: _col0 type: string tag: -1 value expressions: expr: _col1 type: bigint Reduce Operator Tree: Group By Operator aggregations: expr: count(VALUE._col0) bucketGroup: false keys: expr: KEY._col0 type: string mode: mergepartial outputColumnNames: _col0, _col1 Select Operator expressions: expr: _col0 type: string expr: _col1 type: bigint outputColumnNames: _col0, _col1 Select Operator expressions: expr: UDFToInteger(_col0) type: int expr: UDFToInteger(_col1) type: int outputColumnNames: _col0, _col1 File Output Operator compressed: false GlobalTableId: 1 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 name: default.dest_j1 Stage: Stage-0 Move Operator tables: replace: true 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 name: default.dest_j1 Stage: Stage-3 Stats-Aggr Operator PREHOOK: query: INSERT OVERWRITE TABLE dest_j1 SELECT /*+ MAPJOIN(x) */ x.key, count(1) FROM src1 x JOIN src y ON (x.key = y.key) group by x.key PREHOOK: type: QUERY PREHOOK: Input: default@src PREHOOK: Input: default@src1 PREHOOK: Output: default@dest_j1 POSTHOOK: query: INSERT OVERWRITE TABLE dest_j1 SELECT /*+ MAPJOIN(x) */ x.key, count(1) FROM src1 x JOIN src y ON (x.key = y.key) group by x.key POSTHOOK: type: QUERY POSTHOOK: Input: default@src POSTHOOK: Input: default@src1 POSTHOOK: Output: default@dest_j1 POSTHOOK: Lineage: dest_j1.cnt EXPRESSION [(src1)x.null, (src)y.null, ] POSTHOOK: Lineage: dest_j1.key EXPRESSION [(src1)x.FieldSchema(name:key, type:string, comment:default), ] PREHOOK: query: select * from dest_j1 x order by x.key PREHOOK: type: QUERY PREHOOK: Input: default@dest_j1 PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_16-05-03_234_5490278043076834243/-mr-10000 POSTHOOK: query: select * from dest_j1 x order by x.key POSTHOOK: type: QUERY POSTHOOK: Input: default@dest_j1 POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_16-05-03_234_5490278043076834243/-mr-10000 POSTHOOK: Lineage: dest_j1.cnt EXPRESSION [(src1)x.null, (src)y.null, ] POSTHOOK: Lineage: dest_j1.key EXPRESSION [(src1)x.FieldSchema(name:key, type:string, comment:default), ] 66 1 98 2 128 3 146 2 150 1 213 2 224 2 238 2 255 2 273 3 278 2 311 3 369 3 401 5 406 4