[jira] [Created] (HIVE-16936) wrong result with CTAS(create table as select)

["Xiaomeng Huang (JIRA)" <ji...@apache.org>]

Xiaomeng Huang created HIVE-16936:
-------------------------------------

             Summary: wrong result with CTAS(create table as select)
                 Key: HIVE-16936
                 URL: https://issues.apache.org/jira/browse/HIVE-16936
             Project: Hive
          Issue Type: Bug
    Affects Versions: 1.2.1
            Reporter: Xiaomeng Huang
            Priority: Critical


1. 
{code}
hive> select 'test' as did from abc_test_old
    > where did = '5FCAFD34-C124-4E13-AF65-27B675C945CC' limit 1;
OK
test  
{code}
result is 'test'

2. 
{code}
hive> create table abc_test_12345 as
    > select 'test' as did from abc_test_old
    > where did = '5FCAFD34-C124-4E13-AF65-27B675C945CC' limit 1;

hive> select did from abc_test_12345 limit 1;
OK
5FCAFD34-C124-4E13-AF65-27B675C945CC 
{code}
result is '5FCAFD34-C124-4E13-AF65-27B675C945CC'
why result is not 'test'?

3. 
{code}
hive> explain
    > create table abc_test_12345 as
    > select 'test' as did from abc_test_old
    > where did = '5FCAFD34-C124-4E13-AF65-27B675C945CC' limit 1;
OK
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-6 depends on stages: Stage-1 , consists of Stage-3, Stage-2, Stage-4
  Stage-3
  Stage-0 depends on stages: Stage-3, Stage-2, Stage-5
  Stage-7 depends on stages: Stage-0
  Stage-2
  Stage-4
  Stage-5 depends on stages: Stage-4

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: abc_test_old
            Statistics: Num rows: 32 Data size: 1152 Basic stats: COMPLETE Column stats: NONE
            Filter Operator
              predicate: (did = '5FCAFD34-C124-4E13-AF65-27B675C945CC') (type: boolean)
              Statistics: Num rows: 16 Data size: 576 Basic stats: COMPLETE Column stats: NONE
              Select Operator
                Statistics: Num rows: 16 Data size: 576 Basic stats: COMPLETE Column stats: NONE
                Limit
                  Number of rows: 1
                  Statistics: Num rows: 1 Data size: 36 Basic stats: COMPLETE Column stats: NONE
                  Reduce Output Operator
                    sort order:
                    Statistics: Num rows: 1 Data size: 36 Basic stats: COMPLETE Column stats: NONE
      Reduce Operator Tree:
        Select Operator
          expressions: '5FCAFD34-C124-4E13-AF65-27B675C945CC' (type: string)
          outputColumnNames: _col0
          Statistics: Num rows: 1 Data size: 36 Basic stats: COMPLETE Column stats: NONE
          Limit
            Number of rows: 1
            Statistics: Num rows: 1 Data size: 36 Basic stats: COMPLETE Column stats: NONE
            File Output Operator
              compressed: true
              Statistics: Num rows: 1 Data size: 36 Basic stats: COMPLETE Column stats: NONE
              table:
                  input format: org.apache.hadoop.hive.ql.io.orc.OrcInputFormat
                  output format: org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat
                  serde: org.apache.hadoop.hive.ql.io.orc.OrcSerde
                  name: default.abc_test_12345
......
{code}
why expressions is '5FCAFD34-C124-4E13-AF65-27B675C945CC'



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