[HIVE-12541] SymbolicTextInputFormat should supports the path with regex

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.14.0, 1.2.0, 1.2.1
• Fix Version/s: 2.1.0
• Assignee: chenliang
• Reporter: Xiaowei Wang
• Created: 30/Nov/15 15:16
• Updated: 11/Dec/18 13:06
• Resolved: 22/Dec/15 14:40

Description

1, In fact,SybolicTextInputFormat supports the path with regex .I add some test sql .
2, But ,when using CombineHiveInputFormat to combine input files , It cannot resolve the path with regex ,so it will get a wrong result.I give a example ,and fix the problem.

Table desc :

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'  

There is a link file in the dir '/user/hive/warehouse/symlink_text_input_format' , the content of the link file is

 viewfs://nsx/tmp/symlink* 

it contains one path ,and the path contains a regex!

Execute the sql :

set hive.rework.mapredwork = true ;
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 ;

It will get a wrong result :0