Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Plain View
Sqoop >> mail # user >> Mapping of relational tables and join keys to HBase

Saiph Kappa 2013-12-18, 18:08
Copy link to this message
Re: Mapping of relational tables and join keys to HBase
Hey there,

Have you checked out
The row key will be what ever column you are splitting by, unless
--hbase-row-key option is specified. With a join, this should be no
different. The resulting columns of the join will end up in HBase under the
same column family using column names for columns in Hbase.

On Wed, Dec 18, 2013 at 10:08 AM, Saiph Kappa <[EMAIL PROTECTED]> wrote:

> Hi,
> Can anyone tell me how sqoop maps relational keys to hbase keys?
> For instance, in mysql, if I have table Location with columns id, address,
> city, country, where the last two are foreign keys to tables City and
> Country, how is this mapped to HBase? Will we still have a table City and
> Country?
> Or, if we have tables Consumer, Provider, and Transaction (which is just
> to join the other two tables when a transaction happens), how is this
> situation mapped to hbase (in terms of tables and generated keys).
> Thanks.
Saiph Kappa 2013-12-23, 18:29
Abraham Elmahrek 2013-12-23, 20:43
Jarek Jarcec Cecho 2013-12-24, 17:33