query: DROP TABLE T1
query: CREATE TABLE T1(key STRING, value STRING) STORED AS TEXTFILE
query: LOAD DATA LOCAL INPATH '../data/files/kv1.txt' INTO TABLE T1
query: LOAD DATA LOCAL INPATH '../data/files/kv2.txt' INTO TABLE T1
query: DROP TABLE T2
query: CREATE TABLE T2(key STRING, value STRING)
query: EXPLAIN 
INSERT OVERWRITE TABLE T2 SELECT * FROM (SELECT * FROM T1 DISTRIBUTE BY key SORT BY key, value) T LIMIT 20
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_SUBQUERY (TOK_QUERY (TOK_FROM (TOK_TABREF T1)) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF)) (TOK_DISTRIBUTEBY (TOK_TABLE_OR_COL key)) (TOK_SORTBY (TOK_TABSORTCOLNAMEASC (TOK_TABLE_OR_COL key)) (TOK_TABSORTCOLNAMEASC (TOK_TABLE_OR_COL value))))) T)) (TOK_INSERT (TOK_DESTINATION (TOK_TAB T2)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF)) (TOK_LIMIT 20)))

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

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        t:t1 
          TableScan
            alias: t1
            Select Operator
              expressions:
                    expr: key
                    type: string
                    expr: value
                    type: string
              outputColumnNames: _col0, _col1
              Reduce Output Operator
                key expressions:
                      expr: _col0
                      type: string
                      expr: _col1
                      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
          Select Operator
            expressions:
                  expr: _col0
                  type: string
                  expr: _col1
                  type: string
            outputColumnNames: _col0, _col1
            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:/data/users/athusoo/commits/hive_trunk_ws1/build/ql/tmp/1953025922/10002 
            Reduce Output Operator
              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: 1
              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
                  name: t2

  Stage: Stage-0
    Move Operator
      tables:
          replace: true
          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
              name: t2


query: INSERT OVERWRITE TABLE T2 SELECT * FROM (SELECT * FROM T1 DISTRIBUTE BY key SORT BY key, value) T LIMIT 20
Input: default/t1
Output: default/t2
query: SELECT * FROM T2 SORT BY key, value
Input: default/t2
Output: file:/data/users/athusoo/commits/hive_trunk_ws1/build/ql/tmp/741107383/10000
0	val_0
0	val_0
0	val_0
0	val_1
0	val_1
1	val_2
10	val_10
10	val_11
100	val_100
100	val_100
100	val_101
100	val_101
101	val_102
102	val_103
103	val_103
103	val_103
104	val_104
104	val_104
104	val_105
104	val_105
query: DROP TABLE T1
query: DROP TABLE T2