PREHOOK: query: explain select src.key from src where src.key in ( select distinct key from src)
PREHOOK: type: QUERY
POSTHOOK: query: explain select src.key from src where src.key in ( select distinct key from src)
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-2 is a root stage
  Stage-4 depends on stages: Stage-2 , consists of Stage-5, Stage-1
  Stage-5 has a backup stage: Stage-1
  Stage-3 depends on stages: Stage-5
  Stage-1
  Stage-0 depends on stages: Stage-3, Stage-1

STAGE PLANS:
  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 is not null (type: boolean)
              Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
              Select Operator
                expressions: key (type: string)
                outputColumnNames: _col0
                Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
                Group By Operator
                  keys: _col0 (type: string)
                  mode: hash
                  outputColumnNames: _col0
                  Statistics: Num rows: 250 Data size: 2656 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: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
      Reduce Operator Tree:
        Group By Operator
          keys: KEY._col0 (type: string)
          mode: mergepartial
          outputColumnNames: _col0
          Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
          Group By Operator
            keys: _col0 (type: string)
            mode: hash
            outputColumnNames: _col0
            Statistics: Num rows: 125 Data size: 1328 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-4
    Conditional Operator

  Stage: Stage-5
    Map Reduce Local Work
      Alias -> Map Local Tables:
        $INTNAME 
          Fetch Operator
            limit: -1
      Alias -> Map Local Operator Tree:
        $INTNAME 
          TableScan
            HashTable Sink Operator
              keys:
                0 _col0 (type: string)
                1 _col0 (type: string)

  Stage: Stage-3
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Filter Operator
              predicate: key is not null (type: boolean)
              Select Operator
                expressions: key (type: string)
                outputColumnNames: _col0
                Map Join Operator
                  condition map:
                       Left Semi Join 0 to 1
                  keys:
                    0 _col0 (type: string)
                    1 _col0 (type: string)
                  outputColumnNames: _col0
                  File Output Operator
                    compressed: false
                    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
      Local Work:
        Map Reduce Local Work

  Stage: Stage-1
    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 is not null (type: boolean)
              Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
              Select Operator
                expressions: key (type: string)
                outputColumnNames: _col0
                Statistics: Num rows: 250 Data size: 2656 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: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
          TableScan
            Reduce Output Operator
              key expressions: _col0 (type: string)
              sort order: +
              Map-reduce partition columns: _col0 (type: string)
              Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
      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: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
          File Output Operator
            compressed: false
            Statistics: Num rows: 275 Data size: 2921 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