query: EXPLAIN
SELECT * FROM SRC x where x.key = 10 CLUSTER BY x.key
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF SRC x)) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF)) (TOK_WHERE (= (. (TOK_TABLE_OR_COL x) key) 10)) (TOK_CLUSTERBY (. (TOK_TABLE_OR_COL x) key))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        x 
          TableScan
            alias: x
            Filter Operator
              predicate:
                  expr: (UDFToDouble(key) = UDFToDouble(10))
                  type: boolean
              Filter Operator
                predicate:
                    expr: (UDFToDouble(key) = UDFToDouble(10))
                    type: boolean
                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.TextInputFormat
                output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

  Stage: Stage-0
    Fetch Operator
      limit: -1


query: SELECT * FROM SRC x where x.key = 10 CLUSTER BY x.key
Input: default/src
Output: file:/data/users/athusoo/commits/hive_trunk_ws1/build/ql/tmp/661923183/10000
10	val_10
query: EXPLAIN 
SELECT x.key, x.value as v1, y.key  FROM SRC x JOIN SRC y ON (x.key = y.key)  where x.key = 20 CLUSTER BY v1
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_TABREF SRC x) (TOK_TABREF SRC y) (= (. (TOK_TABLE_OR_COL x) key) (. (TOK_TABLE_OR_COL y) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (. (TOK_TABLE_OR_COL x) key)) (TOK_SELEXPR (. (TOK_TABLE_OR_COL x) value) v1) (TOK_SELEXPR (. (TOK_TABLE_OR_COL y) key))) (TOK_WHERE (= (. (TOK_TABLE_OR_COL x) key) 20)) (TOK_CLUSTERBY (TOK_TABLE_OR_COL v1))))

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:
        y 
          TableScan
            alias: y
            Reduce Output Operator
              key expressions:
                    expr: key
                    type: string
              sort order: +
              Map-reduce partition columns:
                    expr: key
                    type: string
              tag: 1
              value expressions:
                    expr: key
                    type: string
        x 
          TableScan
            alias: x
            Filter Operator
              predicate:
                  expr: (UDFToDouble(key) = UDFToDouble(20))
                  type: boolean
              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
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          condition expressions:
            0 {VALUE._col0} {VALUE._col1}
            1 {VALUE._col0}
          outputColumnNames: _col0, _col1, _col2
          Filter Operator
            predicate:
                expr: (UDFToDouble(_col0) = UDFToDouble(20))
                type: boolean
            Select Operator
              expressions:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
                    expr: _col2
                    type: string
              outputColumnNames: _col0, _col1, _col2
              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:
        file:/data/users/athusoo/commits/hive_trunk_ws1/build/ql/tmp/610411732/10002 
            Reduce Output Operator
              key expressions:
                    expr: _col1
                    type: string
              sort order: +
              Map-reduce partition columns:
                    expr: _col1
                    type: string
              tag: -1
              value expressions:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
                    expr: _col2
                    type: string
      Reduce Operator Tree:
        Extract
          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


query: SELECT x.key, x.value as v1, y.key  FROM SRC x JOIN SRC y ON (x.key = y.key) where x.key = 20 CLUSTER BY v1
Input: default/src
Output: file:/data/users/athusoo/commits/hive_trunk_ws1/build/ql/tmp/235995833/10000
20	val_20	20