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https://issues.apache.org/jira/browse/HIVE-26347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

lkl updated HIVE-26347:
-----------------------
    Description: 
reproduce like below:

 

drop table trrr2;
CREATE  TABLE  IF NOT EXISTS `trrr2` (`id` string,`name` string)  ROW FORMAT 
SERDE 'org.apache.hadoop.hive.serde2.OpenCSVSerde' STORED AS INPUTFORMAT 
'org.apache.hadoop.mapred.TextInputFormat' OUTPUTFORMAT 
'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'  TBLPROPERTIES 
('rowformat'='SERDE','serdelibclass'='org.apache.hadoop.hive.serde2.OpenCSVSerde','outputformatclass'='org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat','inputformatclass'='org.apache.hadoop.mapred.TextInputFormat','serdename'='org.apache.hadoop.hive.serde2.OpenCSVSerde');

ALTER TABLE trrr2 add columns(abc string);

 

error msg below:

FAILED: Execution Error, return code 1 from 
org.apache.hadoop.hive.ql.exec.DDLTask. Unable to alter table. 
java.lang.IllegalArgumentException: Error: type expected at the position 0 of 
'<derived from deserializer>' but '<' is found.

 

  was:
drop table trrr2;
CREATE  TABLE  IF NOT EXISTS `trrr2` (`id` string,`name` string)  ROW FORMAT 
SERDE 'org.apache.hadoop.hive.serde2.OpenCSVSerde' STORED AS INPUTFORMAT 
'org.apache.hadoop.mapred.TextInputFormat' OUTPUTFORMAT 
'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'  TBLPROPERTIES 
('rowformat'='SERDE','serdelibclass'='org.apache.hadoop.hive.serde2.OpenCSVSerde','outputformatclass'='org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat','inputformatclass'='org.apache.hadoop.mapred.TextInputFormat','serdename'='org.apache.hadoop.hive.serde2.OpenCSVSerde');

ALTER TABLE trrr2 add columns(abc string);


> hive-2.3.5-csvserde-add colnum报错
> --------------------------------
>
>                 Key: HIVE-26347
>                 URL: https://issues.apache.org/jira/browse/HIVE-26347
>             Project: Hive
>          Issue Type: Bug
>          Components: JDBC, Query Planning, Serializers/Deserializers
>    Affects Versions: 2.3.5, 2.3.7
>            Reporter: lkl
>            Priority: Major
>
> reproduce like below:
>  
> drop table trrr2;
> CREATE  TABLE  IF NOT EXISTS `trrr2` (`id` string,`name` string)  ROW FORMAT 
> SERDE 'org.apache.hadoop.hive.serde2.OpenCSVSerde' STORED AS INPUTFORMAT 
> 'org.apache.hadoop.mapred.TextInputFormat' OUTPUTFORMAT 
> 'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'  TBLPROPERTIES 
> ('rowformat'='SERDE','serdelibclass'='org.apache.hadoop.hive.serde2.OpenCSVSerde','outputformatclass'='org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat','inputformatclass'='org.apache.hadoop.mapred.TextInputFormat','serdename'='org.apache.hadoop.hive.serde2.OpenCSVSerde');
> ALTER TABLE trrr2 add columns(abc string);
>  
> error msg below:
> FAILED: Execution Error, return code 1 from 
> org.apache.hadoop.hive.ql.exec.DDLTask. Unable to alter table. 
> java.lang.IllegalArgumentException: Error: type expected at the position 0 of 
> '<derived from deserializer>' but '<' is found.
>  



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