PREHOOK: query: CREATE TABLE T1(key STRING, val STRING) SKEWED BY (key) ON ((2)) STORED AS TEXTFILE PREHOOK: type: CREATETABLE PREHOOK: Output: database:default PREHOOK: Output: default@T1 POSTHOOK: query: CREATE TABLE T1(key STRING, val STRING) SKEWED BY (key) ON ((2)) STORED AS TEXTFILE POSTHOOK: type: CREATETABLE POSTHOOK: Output: database:default POSTHOOK: Output: default@T1 PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1 PREHOOK: type: LOAD #### A masked pattern was here #### PREHOOK: Output: default@t1 POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1 POSTHOOK: type: LOAD #### A masked pattern was here #### POSTHOOK: Output: default@t1 PREHOOK: query: CREATE TABLE T2(key STRING, val STRING) STORED AS TEXTFILE PREHOOK: type: CREATETABLE PREHOOK: Output: database:default PREHOOK: Output: default@T2 POSTHOOK: query: CREATE TABLE T2(key STRING, val STRING) STORED AS TEXTFILE POSTHOOK: type: CREATETABLE POSTHOOK: Output: database:default POSTHOOK: Output: default@T2 PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2 PREHOOK: type: LOAD #### A masked pattern was here #### PREHOOK: Output: default@t2 POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2 POSTHOOK: type: LOAD #### A masked pattern was here #### POSTHOOK: Output: default@t2 PREHOOK: query: -- copy from skewjoinopt11 -- test compile time skew join and auto map join -- This test is to verify the skew join compile optimization when the join is followed -- by a union. Both sides of a union consist of a join, which should have used -- skew join compile time optimization. -- adding an order by at the end to make the results deterministic EXPLAIN select * from ( select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key union all select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key ) subq1 PREHOOK: type: QUERY POSTHOOK: query: -- copy from skewjoinopt11 -- test compile time skew join and auto map join -- This test is to verify the skew join compile optimization when the join is followed -- by a union. Both sides of a union consist of a join, which should have used -- skew join compile time optimization. -- adding an order by at the end to make the results deterministic EXPLAIN select * from ( select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key union all select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key ) subq1 POSTHOOK: type: QUERY STAGE DEPENDENCIES: Stage-16 is a root stage Stage-2 depends on stages: Stage-16 Stage-3 depends on stages: Stage-2, Stage-6 Stage-17 is a root stage Stage-6 depends on stages: Stage-17 Stage-0 depends on stages: Stage-3 STAGE PLANS: Stage: Stage-16 Map Reduce Local Work Alias -> Map Local Tables: null-subquery1:subq1-subquery1:a Fetch Operator limit: -1 subquery1:a Fetch Operator limit: -1 Alias -> Map Local Operator Tree: null-subquery1:subq1-subquery1:a TableScan alias: a Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE Filter Operator predicate: (key is not null and (key = '2')) (type: boolean) Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE HashTable Sink Operator keys: 0 key (type: string) 1 key (type: string) subquery1:a TableScan alias: a Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE Filter Operator predicate: (key is not null and (not (key = '2'))) (type: boolean) Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE HashTable Sink Operator keys: 0 key (type: string) 1 key (type: string) Stage: Stage-2 Map Reduce Map Operator Tree: TableScan alias: b Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE Filter Operator predicate: (key is not null and (key = '2')) (type: boolean) Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Map Join Operator condition map: Inner Join 0 to 1 keys: 0 key (type: string) 1 key (type: string) outputColumnNames: _col0, _col1, _col6 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Select Operator expressions: _col0 (type: string), _col1 (type: string), _col6 (type: string) outputColumnNames: _col0, _col1, _col2 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Union Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE File Output Operator compressed: false table: input format: org.apache.hadoop.mapred.SequenceFileInputFormat output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe TableScan alias: b Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE Filter Operator predicate: (key is not null and (not (key = '2'))) (type: boolean) Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Map Join Operator condition map: Inner Join 0 to 1 keys: 0 key (type: string) 1 key (type: string) outputColumnNames: _col0, _col1, _col6 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Select Operator expressions: _col0 (type: string), _col1 (type: string), _col6 (type: string) outputColumnNames: _col0, _col1, _col2 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Union Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE File Output Operator compressed: false table: input format: org.apache.hadoop.mapred.SequenceFileInputFormat output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe Local Work: Map Reduce Local Work Stage: Stage-3 Map Reduce Map Operator Tree: TableScan Union Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Select Operator expressions: _col0 (type: string), _col1 (type: string), _col2 (type: string) outputColumnNames: _col0, _col1, _col2 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE File Output Operator compressed: false Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 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 TableScan Union Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Select Operator expressions: _col0 (type: string), _col1 (type: string), _col2 (type: string) outputColumnNames: _col0, _col1, _col2 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE File Output Operator compressed: false Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 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-17 Map Reduce Local Work Alias -> Map Local Tables: null-subquery2:subq1-subquery2:a Fetch Operator limit: -1 subquery2:a Fetch Operator limit: -1 Alias -> Map Local Operator Tree: null-subquery2:subq1-subquery2:a TableScan alias: a Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE Filter Operator predicate: (key is not null and (key = '2')) (type: boolean) Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE HashTable Sink Operator keys: 0 key (type: string) 1 key (type: string) subquery2:a TableScan alias: a Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE Filter Operator predicate: (key is not null and (not (key = '2'))) (type: boolean) Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE HashTable Sink Operator keys: 0 key (type: string) 1 key (type: string) Stage: Stage-6 Map Reduce Map Operator Tree: TableScan alias: b Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE Filter Operator predicate: (key is not null and (key = '2')) (type: boolean) Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Map Join Operator condition map: Inner Join 0 to 1 keys: 0 key (type: string) 1 key (type: string) outputColumnNames: _col0, _col1, _col6 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Select Operator expressions: _col0 (type: string), _col1 (type: string), _col6 (type: string) outputColumnNames: _col0, _col1, _col2 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Union Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE File Output Operator compressed: false table: input format: org.apache.hadoop.mapred.SequenceFileInputFormat output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe TableScan alias: b Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE Filter Operator predicate: (key is not null and (not (key = '2'))) (type: boolean) Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Map Join Operator condition map: Inner Join 0 to 1 keys: 0 key (type: string) 1 key (type: string) outputColumnNames: _col0, _col1, _col6 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Select Operator expressions: _col0 (type: string), _col1 (type: string), _col6 (type: string) outputColumnNames: _col0, _col1, _col2 Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE Union Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE File Output Operator compressed: false table: input format: org.apache.hadoop.mapred.SequenceFileInputFormat output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe Local Work: Map Reduce Local Work Stage: Stage-0 Fetch Operator limit: -1 Processor Tree: ListSink PREHOOK: query: select * from ( select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key union all select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key ) subq1 ORDER BY key, val1, val2 PREHOOK: type: QUERY PREHOOK: Input: default@t1 PREHOOK: Input: default@t2 #### A masked pattern was here #### POSTHOOK: query: select * from ( select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key union all select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key ) subq1 ORDER BY key, val1, val2 POSTHOOK: type: QUERY POSTHOOK: Input: default@t1 POSTHOOK: Input: default@t2 #### A masked pattern was here #### 2 12 22 2 12 22 3 13 13 3 13 13 8 18 18 8 18 18 8 18 18 8 18 18 8 28 18 8 28 18 8 28 18 8 28 18