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-1 is a root stage
  Stage-5 depends on stages: Stage-1 , consists of Stage-6, Stage-2
  Stage-6 has a backup stage: Stage-2
  Stage-4 depends on stages: Stage-6
  Stage-2
  Stage-0 depends on stages: Stage-4, Stage-2

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Statistics: Num rows: 58 Data size: 5812 Basic stats: COMPLETE Column stats: NONE
            Filter Operator
              predicate: key is not null (type: boolean)
              Statistics: Num rows: 29 Data size: 2906 Basic stats: COMPLETE Column stats: NONE
              Select Operator
                expressions: key (type: string)
                outputColumnNames: key
                Statistics: Num rows: 29 Data size: 2906 Basic stats: COMPLETE Column stats: NONE
                Group By Operator
                  keys: key (type: string)
                  mode: hash
                  outputColumnNames: _col0
                  Statistics: Num rows: 29 Data size: 2906 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: 29 Data size: 2906 Basic stats: COMPLETE Column stats: NONE
      Reduce Operator Tree:
        Group By Operator
          keys: KEY._col0 (type: string)
          mode: mergepartial
          outputColumnNames: _col0
          Statistics: Num rows: 14 Data size: 1402 Basic stats: COMPLETE Column stats: NONE
          Select Operator
            expressions: _col0 (type: string)
            outputColumnNames: _col0
            Statistics: Num rows: 14 Data size: 1402 Basic stats: COMPLETE Column stats: NONE
            Group By Operator
              keys: _col0 (type: string)
              mode: hash
              outputColumnNames: _col0
              Statistics: Num rows: 14 Data size: 1402 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-5
    Conditional Operator

  Stage: Stage-6
    Map Reduce Local Work
      Alias -> Map Local Tables:
        $INTNAME 
          Fetch Operator
            limit: -1
      Alias -> Map Local Operator Tree:
        $INTNAME 
          TableScan
            HashTable Sink Operator
              condition expressions:
                0 {key}
                1 
              keys:
                0 key (type: string)
                1 _col0 (type: string)

  Stage: Stage-4
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Filter Operator
              predicate: key is not null (type: boolean)
              Map Join Operator
                condition map:
                     Left Semi Join 0 to 1
                condition expressions:
                  0 {key}
                  1 
                keys:
                  0 key (type: string)
                  1 _col0 (type: string)
                outputColumnNames: _col0
                Select Operator
                  expressions: _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-2
    Map Reduce
      Map Operator Tree:
          TableScan
            Reduce Output Operator
              key expressions: _col0 (type: string)
              sort order: +
              Map-reduce partition columns: _col0 (type: string)
              Statistics: Num rows: 14 Data size: 1402 Basic stats: COMPLETE Column stats: NONE
          TableScan
            alias: src
            Statistics: Num rows: 58 Data size: 5812 Basic stats: COMPLETE Column stats: NONE
            Filter Operator
              predicate: key is not null (type: boolean)
              Statistics: Num rows: 29 Data size: 2906 Basic stats: COMPLETE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 29 Data size: 2906 Basic stats: COMPLETE Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Left Semi Join 0 to 1
          condition expressions:
            0 {KEY.reducesinkkey0}
            1 
          outputColumnNames: _col0
          Statistics: Num rows: 31 Data size: 3196 Basic stats: COMPLETE Column stats: NONE
          Select Operator
            expressions: _col0 (type: string)
            outputColumnNames: _col0
            Statistics: Num rows: 31 Data size: 3196 Basic stats: COMPLETE Column stats: NONE
            File Output Operator
              compressed: false
              Statistics: Num rows: 31 Data size: 3196 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