PREHOOK: query: -- scanning un-partitioned data
explain extended select * from src where rand(1) < 0.1
PREHOOK: type: QUERY
POSTHOOK: query: -- scanning un-partitioned data
explain extended select * from src where rand(1) < 0.1
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_WHERE (< (TOK_FUNCTION rand 1) 0.1))))

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:
        src 
          TableScan
            alias: src
            GatherStats: false
            Filter Operator
              isSamplingPred: false
              predicate:
                  expr: (rand(1) < 0.1)
                  type: boolean
              Select Operator
                expressions:
                      expr: key
                      type: string
                      expr: value
                      type: string
                outputColumnNames: _col0, _col1
                File Output Operator
                  compressed: false
                  GlobalTableId: 0
                  directory: file:/tmp/sdong/hive_2011-02-10_16-59-15_337_3392401522353054315/-ext-10001
                  NumFilesPerFileSink: 1
                  Stats Publishing Key Prefix: file:/tmp/sdong/hive_2011-02-10_16-59-15_337_3392401522353054315/-ext-10001/
                  table:
                      input format: org.apache.hadoop.mapred.TextInputFormat
                      output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                      properties:
                        columns _col0,_col1
                        columns.types string:string
                        serialization.format 1
                  TotalFiles: 1
                  GatherStats: false
                  MultiFileSpray: false
      Needs Tagging: false
      Path -> Alias:
        pfile:/data/users/sdong/www/open-source-hive1/build/ql/test/data/warehouse/src [src]
      Path -> Partition:
        pfile:/data/users/sdong/www/open-source-hive1/build/ql/test/data/warehouse/src 
          Partition
            base file name: src
            input format: org.apache.hadoop.mapred.TextInputFormat
            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
            properties:
              bucket_count -1
              columns key,value
              columns.types string:string
              file.inputformat org.apache.hadoop.mapred.TextInputFormat
              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
              location pfile:/data/users/sdong/www/open-source-hive1/build/ql/test/data/warehouse/src
              name default.src
              serialization.ddl struct src { string key, string value}
              serialization.format 1
              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
              transient_lastDdlTime 1297378968
            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
          
              input format: org.apache.hadoop.mapred.TextInputFormat
              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
              properties:
                bucket_count -1
                columns key,value
                columns.types string:string
                file.inputformat org.apache.hadoop.mapred.TextInputFormat
                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                location pfile:/data/users/sdong/www/open-source-hive1/build/ql/test/data/warehouse/src
                name default.src
                serialization.ddl struct src { string key, string value}
                serialization.format 1
                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
                transient_lastDdlTime 1297378968
              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
              name: default.src
            name: default.src

  Stage: Stage-0
    Fetch Operator
      limit: -1


PREHOOK: query: select * from src where rand(1) < 0.1
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_16-59-15_417_3701035171047203208/-mr-10000
POSTHOOK: query: select * from src where rand(1) < 0.1
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_16-59-15_417_3701035171047203208/-mr-10000
409	val_409
429	val_429
209	val_209
153	val_153
203	val_203
170	val_170
489	val_489
378	val_378
221	val_221
498	val_498
469	val_469
176	val_176
176	val_176
384	val_384
217	val_217
431	val_431
51	val_51
288	val_288
457	val_457
197	val_197
77	val_77
138	val_138
277	val_277
224	val_224
309	val_309
389	val_389
331	val_331
317	val_317
336	val_336
42	val_42
458	val_458
78	val_78
453	val_453
74	val_74
103	val_103
467	val_467
202	val_202
469	val_469
44	val_44
454	val_454
70	val_70
491	val_491
199	val_199
169	val_169
310	val_310
233	val_233
133	val_133
26	val_26
134	val_134
18	val_18
298	val_298
348	val_348
469	val_469
37	val_37
152	val_152
400	val_400