PREHOOK: query: explain
SELECT src5.src1_value FROM (SELECT src3.*, src4.value as src4_value, src4.key as src4_key FROM src src4 JOIN (SELECT src2.*, src1.key as src1_key, src1.value as src1_value FROM src src1 JOIN src src2 ON src1.key = src2.key) src3 ON src3.src1_key = src4.key) src5
PREHOOK: type: QUERY
POSTHOOK: query: explain
SELECT src5.src1_value FROM (SELECT src3.*, src4.value as src4_value, src4.key as src4_key FROM src src4 JOIN (SELECT src2.*, src1.key as src1_key, src1.value as src1_value FROM src src1 JOIN src src2 ON src1.key = src2.key) src3 ON src3.src1_key = src4.key) src5
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_SUBQUERY (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_TABREF src src4) (TOK_SUBQUERY (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_TABREF src src1) (TOK_TABREF src src2) (= (. (TOK_TABLE_OR_COL src1) key) (. (TOK_TABLE_OR_COL src2) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_ALLCOLREF src2)) (TOK_SELEXPR (. (TOK_TABLE_OR_COL src1) key) src1_key) (TOK_SELEXPR (. (TOK_TABLE_OR_COL src1) value) src1_value)))) src3) (= (. (TOK_TABLE_OR_COL src3) src1_key) (. (TOK_TABLE_OR_COL src4) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_ALLCOLREF src3)) (TOK_SELEXPR (. (TOK_TABLE_OR_COL src4) value) src4_value) (TOK_SELEXPR (. (TOK_TABLE_OR_COL src4) key) src4_key)))) src5)) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (. (TOK_TABLE_OR_COL src5) src1_value)))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-2 depends on stages: Stage-1
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        src5:src3:src1 
          TableScan
            alias: src1
            Reduce Output Operator
              key expressions:
                    expr: key
                    type: string
              sort order: +
              Map-reduce partition columns:
                    expr: key
                    type: string
              tag: 0
              value expressions:
                    expr: key
                    type: string
                    expr: value
                    type: string
        src5:src3:src2 
          TableScan
            alias: src2
            Reduce Output Operator
              key expressions:
                    expr: key
                    type: string
              sort order: +
              Map-reduce partition columns:
                    expr: key
                    type: string
              tag: 1
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          condition expressions:
            0 {VALUE._col0} {VALUE._col1}
            1 
          handleSkewJoin: false
          outputColumnNames: _col0, _col1
          Select Operator
            expressions:
                  expr: _col0
                  type: string
                  expr: _col1
                  type: string
            outputColumnNames: _col2, _col3
            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-2
    Map Reduce
      Alias -> Map Operator Tree:
        $INTNAME 
            Reduce Output Operator
              key expressions:
                    expr: _col2
                    type: string
              sort order: +
              Map-reduce partition columns:
                    expr: _col2
                    type: string
              tag: 1
              value expressions:
                    expr: _col3
                    type: string
        src5:src4 
          TableScan
            alias: src4
            Reduce Output Operator
              key expressions:
                    expr: key
                    type: string
              sort order: +
              Map-reduce partition columns:
                    expr: key
                    type: string
              tag: 0
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          condition expressions:
            0 
            1 {VALUE._col3}
          handleSkewJoin: false
          outputColumnNames: _col5
          Select Operator
            expressions:
                  expr: _col5
                  type: string
            outputColumnNames: _col3
            Select Operator
              expressions:
                    expr: _col3
                    type: string
              outputColumnNames: _col0
              File Output Operator
                compressed: false
                GlobalTableId: 0
                table:
                    input format: org.apache.hadoop.mapred.TextInputFormat
                    output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

  Stage: Stage-0
    Fetch Operator
      limit: -1