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Sqoop, mail # user - Re: Export in free form And Mixed update/insert


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Re: Export in free form And Mixed update/insert
Jarek Jarcec Cecho 2013-05-22, 17:34
Hi YouPeng,
Sqoop's Oracle connector do supports upsert mode [1]. Would you mind sharing with us entire Sqoop command line and log generated with parameter --verbose?

Jarcec

Links:
1: https://github.com/apache/sqoop/blob/trunk/src/java/org/apache/sqoop/manager/OracleManager.java#L401

On Wed, May 22, 2013 at 06:20:06PM +0800, YouPeng Yang wrote:
> Hi Jarek Jarcec Cecho
>
>   I also have found the tip. Thank you.
>
>   Here comes another question.
>
>   I find that  sqoop-1.4  support one  to update rows if they exist in the
> database already or insert rows if they do not exist yet  by using
> --update-key <col-name> --update-mode <mode>.
>
>   However, I got the error when I tried it:
>   ERROR tool.ExportTool: Error during export: Mixed update/insert is not
> supported against the target database yet
>
>  Note: the database is oracle.
>
>  1.Does it only supports the MySQL,but I found nothing that hint this in
> docs.
>
>  2.Is there any solutions that fullfil my issue to update rows if they
> exist in the database already or insert rows if they do not exist yet
>
>
>
> Thanks you.
>
>
> Regards.
>
>
> 2013/5/22 Jarek Jarcec Cecho <[EMAIL PROTECTED]>
>
> > Hi YouPeng,
> > Sqoop 1 do not supports custom insert query when exporting data from HDFS.
> > I think that in your use case you can use parameter --columns to specify
> > which columns and in what order are present on HDFS, for example:
> >
> >   sqoop ... --columns ID,TIMEID,COLA,COLB
> >
> > Jarcec
> >
> > On Wed, May 22, 2013 at 02:49:04PM +0800, YouPeng Yang wrote:
> > > Hi
> > >   I want to  export data on the HDFS to the oracle database with
> > > sqoop-1.4(sqoop-1.4.1-cdh4.1.2). However the columns betwean HDFS and
> > > Oracle table  are  not exactly same to each other.
> > >
> > >  For example,Data on HDFS:
> > > -------------------------------------------------------------
> > > | ID |      TIMEID          |   COLA  | COLB  |
> > > -------------------------------------------------------------
> > > | 6  |  201305221335    |    0        |  20      |
> > > -------------------------------------------------------------
> > >
> > > the Oracle table:
> > > ------------------------------------------------------------------------
> > > | ID |      TIMEID          |   COLC  | COLB   | COLA |
> > > ------------------------------------------------------------------------
> > > | 7  |  201305221335    |     kk      |  20      |  1       |
> > > ------------------------------------------------------------------------
> > > Note:Additional COLC and unsame order.
> > >
> > >
> > > I notice the sqoop export command:
> > > --export-dir   HDFS source path for the export
> > > --table  Table to populate.
> > > It seams not to export the data to oracle in free from just as Free-form
> > > Query Imports
> > > using the --query argument.
> > >
> > > Could I acheive that goal ?
> > >
> > > Thanks very much
> > >
> > > Regards
> >