PREHOOK: query: create table tst1(key STRING, cnt INT) PREHOOK: type: CREATETABLE POSTHOOK: query: create table tst1(key STRING, cnt INT) POSTHOOK: type: CREATETABLE POSTHOOK: Output: default@tst1 PREHOOK: query: INSERT OVERWRITE TABLE tst1 SELECT a.key, count(1) FROM src a group by a.key PREHOOK: type: QUERY PREHOOK: Input: default@src PREHOOK: Output: default@tst1 POSTHOOK: query: INSERT OVERWRITE TABLE tst1 SELECT a.key, count(1) FROM src a group by a.key POSTHOOK: type: QUERY POSTHOOK: Input: default@src POSTHOOK: Output: default@tst1 POSTHOOK: Lineage: tst1.cnt EXPRESSION [(src)a.null, ] POSTHOOK: Lineage: tst1.key SIMPLE [(src)a.FieldSchema(name:key, type:string, comment:default), ] PREHOOK: query: explain SELECT sum(a.cnt) FROM tst1 a JOIN tst1 b ON a.key = b.key PREHOOK: type: QUERY POSTHOOK: query: explain SELECT sum(a.cnt) FROM tst1 a JOIN tst1 b ON a.key = b.key POSTHOOK: type: QUERY POSTHOOK: Lineage: tst1.cnt EXPRESSION [(src)a.null, ] POSTHOOK: Lineage: tst1.key SIMPLE [(src)a.FieldSchema(name:key, type:string, comment:default), ] ABSTRACT SYNTAX TREE: (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_TABREF (TOK_TABNAME tst1) a) (TOK_TABREF (TOK_TABNAME tst1) b) (= (. (TOK_TABLE_OR_COL a) key) (. (TOK_TABLE_OR_COL b) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION sum (. (TOK_TABLE_OR_COL a) cnt)))))) STAGE DEPENDENCIES: Stage-6 is a root stage , consists of Stage-7, Stage-8, Stage-1 Stage-7 has a backup stage: Stage-1 Stage-4 depends on stages: Stage-7 Stage-2 depends on stages: Stage-1, Stage-4, Stage-5 Stage-8 has a backup stage: Stage-1 Stage-5 depends on stages: Stage-8 Stage-1 Stage-0 is a root stage STAGE PLANS: Stage: Stage-6 Conditional Operator Stage: Stage-7 Map Reduce Local Work Alias -> Map Local Tables: b Fetch Operator limit: -1 Alias -> Map Local Operator Tree: b TableScan alias: b HashTable Sink Operator condition expressions: 0 {cnt} 1 handleSkewJoin: false keys: 0 [Column[key]] 1 [Column[key]] Position of Big Table: 0 Stage: Stage-4 Map Reduce Alias -> Map Operator Tree: a TableScan alias: a Map Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {cnt} 1 handleSkewJoin: false keys: 0 [Column[key]] 1 [Column[key]] outputColumnNames: _col1 Position of Big Table: 0 Select Operator expressions: expr: _col1 type: int outputColumnNames: _col1 Group By Operator aggregations: expr: sum(_col1) bucketGroup: false mode: hash outputColumnNames: _col0 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: #### A masked pattern was here #### Reduce Output Operator sort order: tag: -1 value expressions: expr: _col0 type: bigint Reduce Operator Tree: Group By Operator aggregations: expr: sum(VALUE._col0) bucketGroup: false mode: mergepartial outputColumnNames: _col0 Select Operator expressions: expr: _col0 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-8 Map Reduce Local Work Alias -> Map Local Tables: a Fetch Operator limit: -1 Alias -> Map Local Operator Tree: a TableScan alias: a HashTable Sink Operator condition expressions: 0 {cnt} 1 handleSkewJoin: false keys: 0 [Column[key]] 1 [Column[key]] Position of Big Table: 1 Stage: Stage-5 Map Reduce Alias -> Map Operator Tree: b TableScan alias: b Map Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {cnt} 1 handleSkewJoin: false keys: 0 [Column[key]] 1 [Column[key]] outputColumnNames: _col1 Position of Big Table: 1 Select Operator expressions: expr: _col1 type: int outputColumnNames: _col1 Group By Operator aggregations: expr: sum(_col1) bucketGroup: false mode: hash outputColumnNames: _col0 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-1 Map Reduce Alias -> Map Operator Tree: a TableScan alias: a Reduce Output Operator key expressions: expr: key type: string sort order: + Map-reduce partition columns: expr: key type: string tag: 0 value expressions: expr: cnt type: int b TableScan alias: b Reduce Output Operator key expressions: expr: key type: string sort order: + Map-reduce partition columns: expr: key type: string tag: 1 Reduce Operator Tree: Join Operator condition map: Inner Join 0 to 1 condition expressions: 0 {VALUE._col1} 1 handleSkewJoin: false outputColumnNames: _col1 Select Operator expressions: expr: _col1 type: int outputColumnNames: _col1 Group By Operator aggregations: expr: sum(_col1) bucketGroup: false mode: hash outputColumnNames: _col0 File Output Operator compressed: false GlobalTableId: 0 table: input format: org.apache.hadoop.mapred.SequenceFileInputFormat output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat Stage: Stage-0 Fetch Operator limit: -1 PREHOOK: query: SELECT sum(a.cnt) FROM tst1 a JOIN tst1 b ON a.key = b.key PREHOOK: type: QUERY PREHOOK: Input: default@tst1 #### A masked pattern was here #### POSTHOOK: query: SELECT sum(a.cnt) FROM tst1 a JOIN tst1 b ON a.key = b.key POSTHOOK: type: QUERY POSTHOOK: Input: default@tst1 #### A masked pattern was here #### POSTHOOK: Lineage: tst1.cnt EXPRESSION [(src)a.null, ] POSTHOOK: Lineage: tst1.key SIMPLE [(src)a.FieldSchema(name:key, type:string, comment:default), ] 500