PREHOOK: query: explain
select * from src sort by key limit 10
PREHOOK: type: QUERY
POSTHOOK: query: explain
select * from src sort by key limit 10
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (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_SORTBY (TOK_TABSORTCOLNAMEASC (TOK_TABLE_OR_COL key))) (TOK_LIMIT 10)))

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:
        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: +
                tag: -1
                value expressions:
                      expr: _col0
                      type: string
                      expr: _col1
                      type: string
      Reduce Operator Tree:
        Extract
          Limit
            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:/tmp/sdong/hive_2011-02-10_15-57-49_662_8624774470586471481/-mr-10002 
            Reduce Output Operator
              key expressions:
                    expr: _col0
                    type: string
              sort order: +
              tag: -1
              value expressions:
                    expr: _col0
                    type: string
                    expr: _col1
                    type: string
      Reduce Operator Tree:
        Extract
          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

  Stage: Stage-0
    Fetch Operator
      limit: 10


PREHOOK: query: select * from src sort by key limit 10
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_15-57-49_754_6913553304641154292/-mr-10000
POSTHOOK: query: select * from src sort by key limit 10
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_15-57-49_754_6913553304641154292/-mr-10000
0	val_0
0	val_0
0	val_0
10	val_10
100	val_100
100	val_100
103	val_103
103	val_103
104	val_104
104	val_104