Warning: Map Join MAPJOIN[24][bigTable=?] in task 'Stage-2:MAPRED' is a cross product
PREHOOK: query: explain 
select sum(hash(a.k1,a.v1,a.k2, a.v2))
from (
SELECT src1.key as k1, src1.value as v1, 
       src2.key as k2, src2.value as v2 FROM 
  (SELECT * FROM src WHERE src.key < 10) src1 
    JOIN 
  (SELECT * FROM src WHERE src.key < 10) src2
  SORT BY k1, v1, k2, v2
) a
PREHOOK: type: QUERY
POSTHOOK: query: explain 
select sum(hash(a.k1,a.v1,a.k2, a.v2))
from (
SELECT src1.key as k1, src1.value as v1, 
       src2.key as k2, src2.value as v2 FROM 
  (SELECT * FROM src WHERE src.key < 10) src1 
    JOIN 
  (SELECT * FROM src WHERE src.key < 10) src2
  SORT BY k1, v1, k2, v2
) a
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-6 is a root stage
  Stage-2 depends on stages: Stage-6
  Stage-3 depends on stages: Stage-2
  Stage-0 depends on stages: Stage-3

STAGE PLANS:
  Stage: Stage-6
    Map Reduce Local Work
      Alias -> Map Local Tables:
        a:src1:src 
          Fetch Operator
            limit: -1
      Alias -> Map Local Operator Tree:
        a:src1:src 
          TableScan
            alias: src
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
            Filter Operator
              predicate: (key < 10) (type: boolean)
              Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE
              Select Operator
                expressions: key (type: string), value (type: string)
                outputColumnNames: _col0, _col1
                Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE
                HashTable Sink Operator
                  keys:
                    0 
                    1 

  Stage: Stage-2
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
            Filter Operator
              predicate: (key < 10) (type: boolean)
              Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE
              Select Operator
                expressions: key (type: string), value (type: string)
                outputColumnNames: _col0, _col1
                Statistics: Num rows: 166 Data size: 1763 Basic stats: COMPLETE Column stats: NONE
                Map Join Operator
                  condition map:
                       Inner Join 0 to 1
                  keys:
                    0 
                    1 
                  outputColumnNames: _col0, _col1, _col2, _col3
                  Statistics: Num rows: 182 Data size: 1939 Basic stats: COMPLETE Column stats: NONE
                  Reduce Output Operator
                    key expressions: _col0 (type: string), _col1 (type: string), _col2 (type: string), _col3 (type: string)
                    sort order: ++++
                    Statistics: Num rows: 182 Data size: 1939 Basic stats: COMPLETE Column stats: NONE
      Local Work:
        Map Reduce Local Work
      Reduce Operator Tree:
        Select Operator
          expressions: KEY.reducesinkkey0 (type: string), KEY.reducesinkkey1 (type: string), KEY.reducesinkkey2 (type: string), KEY.reducesinkkey3 (type: string)
          outputColumnNames: _col0, _col1, _col2, _col3
          Statistics: Num rows: 182 Data size: 1939 Basic stats: COMPLETE Column stats: NONE
          Group By Operator
            aggregations: sum(hash(_col0,_col1,_col2,_col3))
            mode: hash
            outputColumnNames: _col0
            Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 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
            Reduce Output Operator
              sort order: 
              Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
              value expressions: _col0 (type: bigint)
      Reduce Operator Tree:
        Group By Operator
          aggregations: sum(VALUE._col0)
          mode: mergepartial
          outputColumnNames: _col0
          Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
          Select Operator
            expressions: _col0 (type: bigint)
            outputColumnNames: _col0
            Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
            File Output Operator
              compressed: false
              Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 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-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

Warning: Map Join MAPJOIN[24][bigTable=?] in task 'Stage-2:MAPRED' is a cross product
PREHOOK: query: select sum(hash(a.k1,a.v1,a.k2, a.v2))
from (
SELECT src1.key as k1, src1.value as v1, 
       src2.key as k2, src2.value as v2 FROM 
  (SELECT * FROM src WHERE src.key < 10) src1 
    JOIN 
  (SELECT * FROM src WHERE src.key < 10) src2
  SORT BY k1, v1, k2, v2
) a
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: select sum(hash(a.k1,a.v1,a.k2, a.v2))
from (
SELECT src1.key as k1, src1.value as v1, 
       src2.key as k2, src2.value as v2 FROM 
  (SELECT * FROM src WHERE src.key < 10) src1 
    JOIN 
  (SELECT * FROM src WHERE src.key < 10) src2
  SORT BY k1, v1, k2, v2
) a
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
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