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: -- 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: -- 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-1 is a root stage
  Stage-2 depends on stages: Stage-1, Stage-8
  Stage-3 depends on stages: Stage-2, Stage-6
  Stage-5 is a root stage
  Stage-6 depends on stages: Stage-5, Stage-10
  Stage-8 is a root stage
  Stage-10 is a root stage
  Stage-0 depends on stages: Stage-3

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          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
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
          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
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
      Reduce Operator Tree:
        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
            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

  Stage: Stage-2
    Map Reduce
      Map Operator Tree:
          TableScan
            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
            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

  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-5
    Map Reduce
      Map Operator Tree:
          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
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
          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
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
      Reduce Operator Tree:
        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
            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

  Stage: Stage-6
    Map Reduce
      Map Operator Tree:
          TableScan
            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
            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

  Stage: Stage-8
    Map Reduce
      Map Operator Tree:
          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
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
          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
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          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
            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

  Stage: Stage-10
    Map Reduce
      Map Operator Tree:
          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
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
          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
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          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
            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

  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