you may want to look at the sequencefile format
http://my.safaribooksonline.com/book/databases/hadoop/9780596521974/file-based-data-structures/id3555432
that tab is to separate key from values in the record (I may be wrong but
this is how I interpreted it)
On Wed, Jan 9, 2013 at 12:49 AM, Richard <codemon...@163.com> wrote:
> more information:
>
> if I set the format as textfile, there is no tab space.
> if I set the format as sequencefile and view the content via hadoop fs
> -text, I saw a tab space in the head of each line.
>
>
> At 2013-01-09 15:44:00,Richard <codemon...@163.com> wrote:
>
> hi there
>
>
> I have a problem with creating a hive table.
>
> no matter what field delimiter I used, I always got a tab space in the head
> of each line (a line is a record).
>
> something like this:
>
> \t f1 \001 f2 \001 f3 ...
>
> where f1 , f2 , f3 denotes the field value and \001 is the field separator.
>
>
> **
>
> here is the clause I used
>
> 35 create external table if not exists ${HIVETBL_my_table}
> 36 (
> 37 nid string,
> 38 userid string,
> 39 spv bigint,
> 40 sipv bigint,
> 41 pay bigint,
> 42 spay bigint,
> 43 ipv bigint,
> 44 sellerid string,
> 45 cate string
> 46 )
> 47 partitioned by(ds string)
> 48 row format delimited fields terminated by '\001' lines terminated by '\n'
> 49 stored as sequencefile
> 50 location '${HADOOP_PATH_4_MY_HIVE}/${HIVETBL_my_table}';
>
>
> thanks for help.
>
>
> Richard
>
>
>
>
>
>
--
Nitin Pawar
