PREHOOK: query: explain select * from (select * from src cluster by key) a join src b on a.key = b.key limit 1
PREHOOK: type: QUERY
POSTHOOK: query: explain select * from (select * from src cluster by key) a join src b on a.key = b.key limit 1
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-2 is a root stage
  Stage-1 depends on stages: Stage-2
  Stage-0 depends on stages: Stage-1

STAGE PLANS:
  Stage: Stage-2
    Spark
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      Vertices:
        Map 3 
            Map Operator Tree:
                TableScan
                  alias: b
                  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
                    Spark HashTable Sink Operator
                      keys:
                        0 _col0 (type: string)
                        1 key (type: string)
            Local Work:
              Map Reduce Local Work

  Stage: Stage-1
    Spark
      Edges:
        Reducer 2 <- Map 1 (SORT, 2)
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      Vertices:
        Map 1 
            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), value (type: string)
                      outputColumnNames: _col0, _col1
                      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
                        value expressions: _col1 (type: string)
        Reducer 2 
            Local Work:
              Map Reduce Local Work
            Reduce Operator Tree:
              Select Operator
                expressions: KEY.reducesinkkey0 (type: string), VALUE._col0 (type: string)
                outputColumnNames: _col0, _col1
                Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
                Map Join Operator
                  condition map:
                       Inner Join 0 to 1
                  keys:
                    0 _col0 (type: string)
                    1 key (type: string)
                  outputColumnNames: _col0, _col1, _col2, _col3
                  input vertices:
                    1 Map 3
                  Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
                  Select Operator
                    expressions: _col0 (type: string), _col1 (type: string), _col2 (type: string), _col3 (type: string)
                    outputColumnNames: _col0, _col1, _col2, _col3
                    Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
                    Limit
                      Number of rows: 1
                      Statistics: Num rows: 1 Data size: 10 Basic stats: COMPLETE Column stats: NONE
                      File Output Operator
                        compressed: false
                        Statistics: Num rows: 1 Data size: 10 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