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From "Xiaowei Wang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-12541) Using CombineHiveInputFormat with the origin inputformat SymbolicTextInputFormat ,it will get a wrong result
Date Mon, 30 Nov 2015 15:17:11 GMT
Xiaowei Wang created HIVE-12541:
-----------------------------------

             Summary: Using CombineHiveInputFormat with the origin inputformat  SymbolicTextInputFormat
 ,it will get a wrong result
                 Key: HIVE-12541
                 URL: https://issues.apache.org/jira/browse/HIVE-12541
             Project: Hive
          Issue Type: Bug
    Affects Versions: 1.2.1, 1.2.0, 0.14.0
            Reporter: Xiaowei Wang
            Assignee: Xiaowei Wang


Table desc :
{noformat}
CREATE External TABLE `symlink_text_input_format`(
  `key` string,
  `value` string)
ROW FORMAT SERDE
  'org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
STORED AS INPUTFORMAT
  'org.apache.hadoop.hive.ql.io.SymlinkTextInputFormat'
OUTPUTFORMAT
  'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
LOCATION
  'viewfs://nsX/user/hive/warehouse/symlink_text_input_format'  
{noformat}
There is a link file in the dir '/user/hive/warehouse/symlink_text_input_format' ,   the content
of the link file is 
{noformat}
 "viewfs://nsx/tmp/symlink* " 
{noformat}
it contains one path ,and the path contains a regex!


Execute the sql : 
{noformat}
set hive.input.format=org.apache.hadoop.hive.ql.io.CombineHiveInputFormat;
set mapred.min.split.size.per.rack= 0 ;
set mapred.min.split.size.per.node= 0 ;
set mapred.max.split.size= 0 ;
select count(*) from  symlink_text_input_format ;

{noformat}
It will result a wrong result :0

At the same time ,I add a test case in the patch.




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