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https://issues.apache.org/jira/browse/HIVE-13935?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt McCline resolved HIVE-13935.
---------------------------------
Resolution: Won't Fix
> Changing char column of textfile table to string/varchar leaves white space.
> ----------------------------------------------------------------------------
>
> Key: HIVE-13935
> URL: https://issues.apache.org/jira/browse/HIVE-13935
> Project: Hive
> Issue Type: Bug
> Affects Versions: 1.2.1
> Reporter: Takahiko Saito
>
> {noformat}
> 0: jdbc:hive2://os-r6-ifsmes-hiveserver2-11-4> create table test_text (c
> char(16)) stored as textfile;
> No rows affected (0.091 seconds)
> 0: jdbc:hive2://os-r6-ifsmes-hiveserver2-11-4> insert into table test_text
> values ('horton works ');
> INFO : Session is already open
> INFO : Dag name: insert into table test_text values ('ho...')(Stage-1)
> INFO :
> INFO : Status: Running (Executing on YARN cluster with App id
> application_1464222003837_0399)
> INFO : Map 1: 0/1
> INFO : Map 1: 0(+1)/1
> INFO : Map 1: 1/1
> INFO : Loading data to table default.test_text from
> hdfs://os-r6-ifsmes-hiveserver2-11-5.openstacklocal:8020/apps/hive/warehouse/test_text/.hive-staging_hive_2016-05-26_17-45-29_669_2888061873550824337-1/-ext-10000
> INFO : Table default.test_text stats: [numFiles=1, numRows=1, totalSize=17,
> rawDataSize=16]
> No rows affected (6.849 seconds)
> 0: jdbc:hive2://os-r6-ifsmes-hiveserver2-11-4> select * from test_text;
> +-------------------+--+
> | test_text.c |
> +-------------------+--+
> | horton works |
> +-------------------+--+
> 1 row selected (0.098 seconds)
> 0: jdbc:hive2://os-r6-ifsmes-hiveserver2-11-4> describe test_text;
> +-----------+------------+----------+--+
> | col_name | data_type | comment |
> +-----------+------------+----------+--+
> | c | char(16) | |
> +-----------+------------+----------+--+
> 1 row selected (0.127 seconds)
> 0: jdbc:hive2://os-r6-ifsmes-hiveserver2-11-4> alter table test_text change
> column c c string;
> No rows affected (0.145 seconds)
> 0: jdbc:hive2://os-r6-ifsmes-hiveserver2-11-4> describe test_text;
> +-----------+------------+----------+--+
> | col_name | data_type | comment |
> +-----------+------------+----------+--+
> | c | string | |
> +-----------+------------+----------+--+
> 1 row selected (0.127 seconds)
> 0: jdbc:hive2://os-r6-ifsmes-hiveserver2-11-4> select * from test_text;
> +-------------------+--+
> | test_text.c |
> +-------------------+--+
> | horton works |
> +-------------------+--+
> 1 row selected (0.066 seconds)
> {noformat}
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