PREHOOK: query: explain select /*+MAPJOIN(src, src1) */ srcpart.key from srcpart join src on (srcpart.value=src.value) join src1 on (srcpart.key=src1.key) PREHOOK: type: QUERY POSTHOOK: query: explain select /*+MAPJOIN(src, src1) */ srcpart.key from srcpart join src on (srcpart.value=src.value) join src1 on (srcpart.key=src1.key) POSTHOOK: type: QUERY ABSTRACT SYNTAX TREE: (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_JOIN (TOK_TABREF (TOK_TABNAME srcpart)) (TOK_TABREF (TOK_TABNAME src)) (= (. (TOK_TABLE_OR_COL srcpart) value) (. (TOK_TABLE_OR_COL src) value))) (TOK_TABREF (TOK_TABNAME src1)) (= (. (TOK_TABLE_OR_COL srcpart) key) (. (TOK_TABLE_OR_COL src1) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_HINTLIST (TOK_HINT TOK_MAPJOIN (TOK_HINTARGLIST src src1))) (TOK_SELEXPR (. (TOK_TABLE_OR_COL srcpart) key))))) STAGE DEPENDENCIES: Stage-6 is a root stage Stage-1 depends on stages: Stage-6 Stage-5 depends on stages: Stage-1 Stage-2 depends on stages: Stage-5 Stage-0 is a root stage STAGE PLANS: Stage: Stage-6 Map Reduce Local Work Alias -> Map Local Tables: src Fetch Operator limit: -1 Alias -> Map Local Operator Tree: src TableScan alias: src HashTable Sink Operator condition expressions: 0 {key} 1 handleSkewJoin: false keys: 0 [Column[value]] 1 [Column[value]] Position of Big Table: 0 Stage: Stage-1 Map Reduce Alias -> Map Operator Tree: srcpart TableScan alias: srcpart Map Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {key} 1 handleSkewJoin: false keys: 0 [Column[value]] 1 [Column[value]] outputColumnNames: _col0 Position of Big Table: 0 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-5 Map Reduce Local Work Alias -> Map Local Tables: src1 Fetch Operator limit: -1 Alias -> Map Local Operator Tree: src1 TableScan alias: src1 HashTable Sink Operator condition expressions: 0 {_col0} 1 handleSkewJoin: false keys: 0 [Column[_col0]] 1 [Column[key]] Position of Big Table: 0 Stage: Stage-2 Map Reduce Alias -> Map Operator Tree: file:/tmp/sdong/hive_2011-02-10_16-39-15_246_6812245566327256930/-mr-10002 Select Operator expressions: expr: _col0 type: string outputColumnNames: _col0 Map Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {_col0} 1 handleSkewJoin: false keys: 0 [Column[_col0]] 1 [Column[key]] outputColumnNames: _col0 Position of Big Table: 0 Select Operator expressions: expr: _col0 type: string outputColumnNames: _col0 Select Operator expressions: expr: _col0 type: string outputColumnNames: _col0 File Output Operator compressed: false GlobalTableId: 0 table: input format: org.apache.hadoop.mapred.TextInputFormat output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat Local Work: Map Reduce Local Work Stage: Stage-0 Fetch Operator limit: -1 PREHOOK: query: explain select /*+MAPJOIN(src, src1) */ count(*) from srcpart join src on (srcpart.value=src.value) join src1 on (srcpart.key=src1.key) group by ds PREHOOK: type: QUERY POSTHOOK: query: explain select /*+MAPJOIN(src, src1) */ count(*) from srcpart join src on (srcpart.value=src.value) join src1 on (srcpart.key=src1.key) group by ds POSTHOOK: type: QUERY ABSTRACT SYNTAX TREE: (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_JOIN (TOK_TABREF (TOK_TABNAME srcpart)) (TOK_TABREF (TOK_TABNAME src)) (= (. (TOK_TABLE_OR_COL srcpart) value) (. (TOK_TABLE_OR_COL src) value))) (TOK_TABREF (TOK_TABNAME src1)) (= (. (TOK_TABLE_OR_COL srcpart) key) (. (TOK_TABLE_OR_COL src1) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_HINTLIST (TOK_HINT TOK_MAPJOIN (TOK_HINTARGLIST src src1))) (TOK_SELEXPR (TOK_FUNCTIONSTAR count))) (TOK_GROUPBY (TOK_TABLE_OR_COL ds)))) STAGE DEPENDENCIES: Stage-7 is a root stage Stage-1 depends on stages: Stage-7 Stage-6 depends on stages: Stage-1 Stage-2 depends on stages: Stage-6 Stage-3 depends on stages: Stage-2 Stage-0 is a root stage STAGE PLANS: Stage: Stage-7 Map Reduce Local Work Alias -> Map Local Tables: src Fetch Operator limit: -1 Alias -> Map Local Operator Tree: src TableScan alias: src HashTable Sink Operator condition expressions: 0 {key} {ds} 1 handleSkewJoin: false keys: 0 [Column[value]] 1 [Column[value]] Position of Big Table: 0 Stage: Stage-1 Map Reduce Alias -> Map Operator Tree: srcpart TableScan alias: srcpart Map Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {key} {ds} 1 handleSkewJoin: false keys: 0 [Column[value]] 1 [Column[value]] outputColumnNames: _col0, _col2 Position of Big Table: 0 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-6 Map Reduce Local Work Alias -> Map Local Tables: src1 Fetch Operator limit: -1 Alias -> Map Local Operator Tree: src1 TableScan alias: src1 HashTable Sink Operator condition expressions: 0 {_col2} 1 handleSkewJoin: false keys: 0 [Column[_col0]] 1 [Column[key]] Position of Big Table: 0 Stage: Stage-2 Map Reduce Alias -> Map Operator Tree: file:/tmp/sdong/hive_2011-02-10_16-39-15_407_4173154005362822854/-mr-10002 Select Operator expressions: expr: _col0 type: string expr: _col2 type: string outputColumnNames: _col0, _col2 Map Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {_col2} 1 handleSkewJoin: false keys: 0 [Column[_col0]] 1 [Column[key]] outputColumnNames: _col2 Position of Big Table: 0 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-3 Map Reduce Alias -> Map Operator Tree: file:/tmp/sdong/hive_2011-02-10_16-39-15_407_4173154005362822854/-mr-10003 Select Operator expressions: expr: _col2 type: string outputColumnNames: _col2 Select Operator expressions: expr: _col2 type: string outputColumnNames: _col2 Group By Operator aggregations: expr: count() bucketGroup: false keys: expr: _col2 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: _col1 type: bigint outputColumnNames: _col0 File Output Operator compressed: false GlobalTableId: 0 table: input format: org.apache.hadoop.mapred.TextInputFormat output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat Stage: Stage-0 Fetch Operator limit: -1 PREHOOK: query: select /*+MAPJOIN(src, src1) */ count(*) from srcpart join src src on (srcpart.value=src.value) join src src1 on (srcpart.key=src1.key) group by ds PREHOOK: type: QUERY PREHOOK: Input: default@src PREHOOK: Input: default@srcpart@ds=2008-04-08/hr=11 PREHOOK: Input: default@srcpart@ds=2008-04-08/hr=12 PREHOOK: Input: default@srcpart@ds=2008-04-09/hr=11 PREHOOK: Input: default@srcpart@ds=2008-04-09/hr=12 PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_16-39-15_579_6486376364563566190/-mr-10000 POSTHOOK: query: select /*+MAPJOIN(src, src1) */ count(*) from srcpart join src src on (srcpart.value=src.value) join src src1 on (srcpart.key=src1.key) group by ds POSTHOOK: type: QUERY POSTHOOK: Input: default@src POSTHOOK: Input: default@srcpart@ds=2008-04-08/hr=11 POSTHOOK: Input: default@srcpart@ds=2008-04-08/hr=12 POSTHOOK: Input: default@srcpart@ds=2008-04-09/hr=11 POSTHOOK: Input: default@srcpart@ds=2008-04-09/hr=12 POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_16-39-15_579_6486376364563566190/-mr-10000 5308 5308