[ https://issues.apache.org/jira/browse/HIVE-16948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
liyunzhang_intel updated HIVE-16948: ------------------------------------ Description: in [union_subquery.q|https://github.com/apache/hive/blob/master/ql/src/test/queries/clientpositive/spark_dynamic_partition_pruning.q#L107] in spark_dynamic_partition_pruning.q {code} set hive.optimize.ppd=true; set hive.ppd.remove.duplicatefilters=true; set hive.spark.dynamic.partition.pruning=true; set hive.optimize.metadataonly=false; set hive.optimize.index.filter=true; set hive.strict.checks.cartesian.product=false; explain select ds from (select distinct(ds) as ds from srcpart union all select distinct(ds) as ds from srcpart) s where s.ds in (select max(srcpart.ds) from srcpart union all select min(srcpart.ds) from srcpart); {code} explain {code} STAGE DEPENDENCIES: Stage-2 is a root stage Stage-1 depends on stages: Stage-2 Stage-0 depends on stages: Stage-1 STAGE PLANS: Stage: Stage-2 Spark Edges: Reducer 11 <- Map 10 (GROUP, 1) Reducer 13 <- Map 12 (GROUP, 1) DagName: root_20170622231525_20a777e5-e659-4138-b605-65f8395e18e2:2 Vertices: Map 10 Map Operator Tree: TableScan alias: srcpart Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Select Operator expressions: ds (type: string) outputColumnNames: ds Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator aggregations: max(ds) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string) Map 12 Map Operator Tree: TableScan alias: srcpart Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Select Operator expressions: ds (type: string) outputColumnNames: ds Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator aggregations: min(ds) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string) Reducer 11 Reduce Operator Tree: Group By Operator aggregations: max(VALUE._col0) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: _col0 is not null (type: boolean) Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Spark Partition Pruning Sink Operator partition key expr: ds Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE target column name: ds target work: Map 1 Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Spark Partition Pruning Sink Operator partition key expr: ds Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE target column name: ds target work: Map 4 Reducer 13 Reduce Operator Tree: Group By Operator aggregations: min(VALUE._col0) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: _col0 is not null (type: boolean) Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Spark Partition Pruning Sink Operator partition key expr: ds Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE target column name: ds target work: Map 1 Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Spark Partition Pruning Sink Operator partition key expr: ds Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE target column name: ds target work: Map 4 Stage: Stage-1 Spark Edges: Reducer 2 <- Map 1 (GROUP, 2) Reducer 3 <- Reducer 2 (PARTITION-LEVEL SORT, 2), Reducer 2 (PARTITION-LEVEL SORT, 2), Reducer 7 (PARTITION-LEVEL SORT, 2), Reducer 9 (PARTITION-LEVEL SORT, 2) Reducer 7 <- Map 6 (GROUP, 1) Reducer 9 <- Map 8 (GROUP, 1) DagName: root_20170622231525_20a777e5-e659-4138-b605-65f8395e18e2:1 Vertices: Map 1 Map Operator Tree: TableScan alias: srcpart filterExpr: ds is not null (type: boolean) Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator keys: ds (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 23248 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: _col0 (type: string) sort order: + Map-reduce partition columns: _col0 (type: string) Statistics: Num rows: 1 Data size: 23248 Basic stats: COMPLETE Column stats: NONE Map 6 Map Operator Tree: TableScan alias: srcpart Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Select Operator expressions: ds (type: string) outputColumnNames: ds Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator aggregations: max(ds) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string) Map 8 Map Operator Tree: TableScan alias: srcpart Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Select Operator expressions: ds (type: string) outputColumnNames: ds Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator aggregations: min(ds) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string) Reducer 2 Reduce Operator Tree: Group By Operator keys: KEY._col0 (type: string) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 23248 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: _col0 (type: string) sort order: + Map-reduce partition columns: _col0 (type: string) Statistics: Num rows: 2 Data size: 46496 Basic stats: COMPLETE Column stats: NONE Reducer 3 Reduce Operator Tree: Join Operator condition map: Left Semi Join 0 to 1 keys: 0 _col0 (type: string) 1 _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 51145 Basic stats: COMPLETE Column stats: NONE File Output Operator compressed: false Statistics: Num rows: 2 Data size: 51145 Basic stats: COMPLETE Column stats: NONE table: input format: org.apache.hadoop.mapred.SequenceFileInputFormat output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe Reducer 7 Reduce Operator Tree: Group By Operator aggregations: max(VALUE._col0) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: _col0 is not null (type: boolean) Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: _col0 (type: string) sort order: + Map-reduce partition columns: _col0 (type: string) Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Reducer 9 Reduce Operator Tree: Group By Operator aggregations: min(VALUE._col0) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: _col0 is not null (type: boolean) Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: _col0 (type: string) sort order: + Map-reduce partition columns: _col0 (type: string) Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Stage: Stage-0 Fetch Operator limit: -1 Processor Tree: ListSink {code} the target work of Reducer11 and Reducer13 is Map4 , but Map4 does not exist in the explain was: union_subquery.q {code} set hive.optimize.ppd=true; set hive.ppd.remove.duplicatefilters=true; set hive.spark.dynamic.partition.pruning=true; set hive.optimize.metadataonly=false; set hive.optimize.index.filter=true; set hive.strict.checks.cartesian.product=false; explain select ds from (select distinct(ds) as ds from srcpart union all select distinct(ds) as ds from srcpart) s where s.ds in (select max(srcpart.ds) from srcpart union all select min(srcpart.ds) from srcpart); {code} explain {code} STAGE DEPENDENCIES: Stage-2 is a root stage Stage-1 depends on stages: Stage-2 Stage-0 depends on stages: Stage-1 STAGE PLANS: Stage: Stage-2 Spark Edges: Reducer 11 <- Map 10 (GROUP, 1) Reducer 13 <- Map 12 (GROUP, 1) DagName: root_20170622231525_20a777e5-e659-4138-b605-65f8395e18e2:2 Vertices: Map 10 Map Operator Tree: TableScan alias: srcpart Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Select Operator expressions: ds (type: string) outputColumnNames: ds Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator aggregations: max(ds) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string) Map 12 Map Operator Tree: TableScan alias: srcpart Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Select Operator expressions: ds (type: string) outputColumnNames: ds Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator aggregations: min(ds) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string) Reducer 11 Reduce Operator Tree: Group By Operator aggregations: max(VALUE._col0) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: _col0 is not null (type: boolean) Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Spark Partition Pruning Sink Operator partition key expr: ds Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE target column name: ds target work: Map 1 Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Spark Partition Pruning Sink Operator partition key expr: ds Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE target column name: ds target work: Map 4 Reducer 13 Reduce Operator Tree: Group By Operator aggregations: min(VALUE._col0) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: _col0 is not null (type: boolean) Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Spark Partition Pruning Sink Operator partition key expr: ds Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE target column name: ds target work: Map 1 Select Operator expressions: _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Spark Partition Pruning Sink Operator partition key expr: ds Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE target column name: ds target work: Map 4 Stage: Stage-1 Spark Edges: Reducer 2 <- Map 1 (GROUP, 2) Reducer 3 <- Reducer 2 (PARTITION-LEVEL SORT, 2), Reducer 2 (PARTITION-LEVEL SORT, 2), Reducer 7 (PARTITION-LEVEL SORT, 2), Reducer 9 (PARTITION-LEVEL SORT, 2) Reducer 7 <- Map 6 (GROUP, 1) Reducer 9 <- Map 8 (GROUP, 1) DagName: root_20170622231525_20a777e5-e659-4138-b605-65f8395e18e2:1 Vertices: Map 1 Map Operator Tree: TableScan alias: srcpart filterExpr: ds is not null (type: boolean) Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator keys: ds (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 23248 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: _col0 (type: string) sort order: + Map-reduce partition columns: _col0 (type: string) Statistics: Num rows: 1 Data size: 23248 Basic stats: COMPLETE Column stats: NONE Map 6 Map Operator Tree: TableScan alias: srcpart Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Select Operator expressions: ds (type: string) outputColumnNames: ds Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator aggregations: max(ds) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string) Map 8 Map Operator Tree: TableScan alias: srcpart Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Select Operator expressions: ds (type: string) outputColumnNames: ds Statistics: Num rows: 1 Data size: 23248 Basic stats: PARTIAL Column stats: NONE Group By Operator aggregations: min(ds) mode: hash outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator sort order: Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE value expressions: _col0 (type: string) Reducer 2 Reduce Operator Tree: Group By Operator keys: KEY._col0 (type: string) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 23248 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: _col0 (type: string) sort order: + Map-reduce partition columns: _col0 (type: string) Statistics: Num rows: 2 Data size: 46496 Basic stats: COMPLETE Column stats: NONE Reducer 3 Reduce Operator Tree: Join Operator condition map: Left Semi Join 0 to 1 keys: 0 _col0 (type: string) 1 _col0 (type: string) outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 51145 Basic stats: COMPLETE Column stats: NONE File Output Operator compressed: false Statistics: Num rows: 2 Data size: 51145 Basic stats: COMPLETE Column stats: NONE table: input format: org.apache.hadoop.mapred.SequenceFileInputFormat output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe Reducer 7 Reduce Operator Tree: Group By Operator aggregations: max(VALUE._col0) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: _col0 is not null (type: boolean) Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: _col0 (type: string) sort order: + Map-reduce partition columns: _col0 (type: string) Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Reducer 9 Reduce Operator Tree: Group By Operator aggregations: min(VALUE._col0) mode: mergepartial outputColumnNames: _col0 Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Filter Operator predicate: _col0 is not null (type: boolean) Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE Group By Operator keys: _col0 (type: string) mode: hash outputColumnNames: _col0 Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Reduce Output Operator key expressions: _col0 (type: string) sort order: + Map-reduce partition columns: _col0 (type: string) Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE Stage: Stage-0 Fetch Operator limit: -1 Processor Tree: ListSink {code} the target work of Reducer11 and Reducer13 is Map4 , but Map4 does not exist in the explain > Invalid explain when running dynamic partition pruning query in HOS > ------------------------------------------------------------------- > > Key: HIVE-16948 > URL: https://issues.apache.org/jira/browse/HIVE-16948 > Project: Hive > Issue Type: Bug > Reporter: liyunzhang_intel > Assignee: liyunzhang_intel > Attachments: HIVE-16948.patch > > > in > [union_subquery.q|https://github.com/apache/hive/blob/master/ql/src/test/queries/clientpositive/spark_dynamic_partition_pruning.q#L107] > in spark_dynamic_partition_pruning.q > {code} > set hive.optimize.ppd=true; > set hive.ppd.remove.duplicatefilters=true; > set hive.spark.dynamic.partition.pruning=true; > set hive.optimize.metadataonly=false; > set hive.optimize.index.filter=true; > set hive.strict.checks.cartesian.product=false; > explain select ds from (select distinct(ds) as ds from srcpart union all > select distinct(ds) as ds from srcpart) s where s.ds in (select > max(srcpart.ds) from srcpart union all select min(srcpart.ds) from srcpart); > {code} > explain > {code} > STAGE DEPENDENCIES: > Stage-2 is a root stage > Stage-1 depends on stages: Stage-2 > Stage-0 depends on stages: Stage-1 > STAGE PLANS: > Stage: Stage-2 > Spark > Edges: > Reducer 11 <- Map 10 (GROUP, 1) > Reducer 13 <- Map 12 (GROUP, 1) > DagName: root_20170622231525_20a777e5-e659-4138-b605-65f8395e18e2:2 > Vertices: > Map 10 > Map Operator Tree: > TableScan > alias: srcpart > Statistics: Num rows: 1 Data size: 23248 Basic stats: > PARTIAL Column stats: NONE > Select Operator > expressions: ds (type: string) > outputColumnNames: ds > Statistics: Num rows: 1 Data size: 23248 Basic stats: > PARTIAL Column stats: NONE > Group By Operator > aggregations: max(ds) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > Reduce Output Operator > sort order: > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > value expressions: _col0 (type: string) > Map 12 > Map Operator Tree: > TableScan > alias: srcpart > Statistics: Num rows: 1 Data size: 23248 Basic stats: > PARTIAL Column stats: NONE > Select Operator > expressions: ds (type: string) > outputColumnNames: ds > Statistics: Num rows: 1 Data size: 23248 Basic stats: > PARTIAL Column stats: NONE > Group By Operator > aggregations: min(ds) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > Reduce Output Operator > sort order: > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > value expressions: _col0 (type: string) > Reducer 11 > Reduce Operator Tree: > Group By Operator > aggregations: max(VALUE._col0) > mode: mergepartial > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE > Column stats: NONE > Filter Operator > predicate: _col0 is not null (type: boolean) > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > Group By Operator > keys: _col0 (type: string) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Select Operator > expressions: _col0 (type: string) > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Group By Operator > keys: _col0 (type: string) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Spark Partition Pruning Sink Operator > partition key expr: ds > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > target column name: ds > target work: Map 1 > Select Operator > expressions: _col0 (type: string) > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Group By Operator > keys: _col0 (type: string) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Spark Partition Pruning Sink Operator > partition key expr: ds > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > target column name: ds > target work: Map 4 > Reducer 13 > Reduce Operator Tree: > Group By Operator > aggregations: min(VALUE._col0) > mode: mergepartial > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE > Column stats: NONE > Filter Operator > predicate: _col0 is not null (type: boolean) > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > Group By Operator > keys: _col0 (type: string) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Select Operator > expressions: _col0 (type: string) > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Group By Operator > keys: _col0 (type: string) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Spark Partition Pruning Sink Operator > partition key expr: ds > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > target column name: ds > target work: Map 1 > Select Operator > expressions: _col0 (type: string) > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Group By Operator > keys: _col0 (type: string) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Spark Partition Pruning Sink Operator > partition key expr: ds > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > target column name: ds > target work: Map 4 > Stage: Stage-1 > Spark > Edges: > Reducer 2 <- Map 1 (GROUP, 2) > Reducer 3 <- Reducer 2 (PARTITION-LEVEL SORT, 2), Reducer 2 > (PARTITION-LEVEL SORT, 2), Reducer 7 (PARTITION-LEVEL SORT, 2), Reducer 9 > (PARTITION-LEVEL SORT, 2) > Reducer 7 <- Map 6 (GROUP, 1) > Reducer 9 <- Map 8 (GROUP, 1) > DagName: root_20170622231525_20a777e5-e659-4138-b605-65f8395e18e2:1 > Vertices: > Map 1 > Map Operator Tree: > TableScan > alias: srcpart > filterExpr: ds is not null (type: boolean) > Statistics: Num rows: 1 Data size: 23248 Basic stats: > PARTIAL Column stats: NONE > Group By Operator > keys: ds (type: string) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 23248 Basic stats: > COMPLETE Column stats: NONE > Reduce Output Operator > key expressions: _col0 (type: string) > sort order: + > Map-reduce partition columns: _col0 (type: string) > Statistics: Num rows: 1 Data size: 23248 Basic stats: > COMPLETE Column stats: NONE > Map 6 > Map Operator Tree: > TableScan > alias: srcpart > Statistics: Num rows: 1 Data size: 23248 Basic stats: > PARTIAL Column stats: NONE > Select Operator > expressions: ds (type: string) > outputColumnNames: ds > Statistics: Num rows: 1 Data size: 23248 Basic stats: > PARTIAL Column stats: NONE > Group By Operator > aggregations: max(ds) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > Reduce Output Operator > sort order: > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > value expressions: _col0 (type: string) > Map 8 > Map Operator Tree: > TableScan > alias: srcpart > Statistics: Num rows: 1 Data size: 23248 Basic stats: > PARTIAL Column stats: NONE > Select Operator > expressions: ds (type: string) > outputColumnNames: ds > Statistics: Num rows: 1 Data size: 23248 Basic stats: > PARTIAL Column stats: NONE > Group By Operator > aggregations: min(ds) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > Reduce Output Operator > sort order: > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > value expressions: _col0 (type: string) > Reducer 2 > Reduce Operator Tree: > Group By Operator > keys: KEY._col0 (type: string) > mode: mergepartial > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 23248 Basic stats: > COMPLETE Column stats: NONE > Reduce Output Operator > key expressions: _col0 (type: string) > sort order: + > Map-reduce partition columns: _col0 (type: string) > Statistics: Num rows: 2 Data size: 46496 Basic stats: > COMPLETE Column stats: NONE > Reducer 3 > Reduce Operator Tree: > Join Operator > condition map: > Left Semi Join 0 to 1 > keys: > 0 _col0 (type: string) > 1 _col0 (type: string) > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 51145 Basic stats: > COMPLETE Column stats: NONE > File Output Operator > compressed: false > Statistics: Num rows: 2 Data size: 51145 Basic stats: > COMPLETE Column stats: NONE > table: > input format: > org.apache.hadoop.mapred.SequenceFileInputFormat > output format: > org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat > serde: > org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe > Reducer 7 > Reduce Operator Tree: > Group By Operator > aggregations: max(VALUE._col0) > mode: mergepartial > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE > Column stats: NONE > Filter Operator > predicate: _col0 is not null (type: boolean) > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > Group By Operator > keys: _col0 (type: string) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Reduce Output Operator > key expressions: _col0 (type: string) > sort order: + > Map-reduce partition columns: _col0 (type: string) > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Reducer 9 > Reduce Operator Tree: > Group By Operator > aggregations: min(VALUE._col0) > mode: mergepartial > outputColumnNames: _col0 > Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE > Column stats: NONE > Filter Operator > predicate: _col0 is not null (type: boolean) > Statistics: Num rows: 1 Data size: 184 Basic stats: > COMPLETE Column stats: NONE > Group By Operator > keys: _col0 (type: string) > mode: hash > outputColumnNames: _col0 > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Reduce Output Operator > key expressions: _col0 (type: string) > sort order: + > Map-reduce partition columns: _col0 (type: string) > Statistics: Num rows: 2 Data size: 368 Basic stats: > COMPLETE Column stats: NONE > Stage: Stage-0 > Fetch Operator > limit: -1 > Processor Tree: > ListSink > {code} > the target work of Reducer11 and Reducer13 is Map4 , but Map4 does not exist > in the explain -- This message was sent by Atlassian JIRA (v6.4.14#64029)