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
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_SUBQUERY (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF)) (TOK_CLUSTERBY (TOK_TABLE_OR_COL key)))) a) (TOK_TABREF (TOK_TABNAME src) b) (= (. (TOK_TABLE_OR_COL a) key) (. (TOK_TABLE_OR_COL b) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF)) (TOK_LIMIT 1)))

STAGE DEPENDENCIES:
  Stage-2 is a root stage
  Stage-4 depends on stages: Stage-2
  Stage-3 depends on stages: Stage-4
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-2
    Map Reduce
      Alias -> Map Operator Tree:
        a:src 
          TableScan
            alias: src
            Select Operator
              expressions:
                    expr: key
                    type: string
                    expr: value
                    type: string
              outputColumnNames: _col0, _col1
              Reduce Output Operator
                key expressions:
                      expr: _col0
                      type: string
                sort order: +
                Map-reduce partition columns:
                      expr: _col0
                      type: string
                tag: -1
                value expressions:
                      expr: _col0
                      type: string
                      expr: _col1
                      type: string
      Reduce Operator Tree:
        Extract
          File Output Operator
            compressed: false
            GlobalTableId: 0
            table:
                input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat

  Stage: Stage-4
    Map Reduce Local Work
      Alias -> Map Local Tables:
        b 
          Fetch Operator
            limit: -1
      Alias -> Map Local Operator Tree:
        b 
          TableScan
            alias: b
            HashTable Sink Operator
              condition expressions:
                0 {_col0} {_col1}
                1 {key} {value}
              handleSkewJoin: false
              keys:
                0 [Column[_col0]]
                1 [Column[key]]
              Position of Big Table: 0

  Stage: Stage-3
    Map Reduce
      Alias -> Map Operator Tree:
        $INTNAME 
            Map Join Operator
              condition map:
                   Inner Join 0 to 1
              condition expressions:
                0 {_col0} {_col1}
                1 {key} {value}
              handleSkewJoin: false
              keys:
                0 [Column[_col0]]
                1 [Column[key]]
              outputColumnNames: _col0, _col1, _col2, _col3
              Position of Big Table: 0
              Select Operator
                expressions:
                      expr: _col0
                      type: string
                      expr: _col1
                      type: string
                      expr: _col2
                      type: string
                      expr: _col3
                      type: string
                outputColumnNames: _col0, _col1, _col2, _col3
                Limit
                  File Output Operator
                    compressed: false
                    GlobalTableId: 0
                    table:
                        input format: org.apache.hadoop.mapred.TextInputFormat
                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
      Local Work:
        Map Reduce Local Work

  Stage: Stage-0
    Fetch Operator
      limit: 1