how to write to multiple hbase tables in my Mapper class?

["Hiller, Dean (Contractor)" <de...@broadridge.com>]

I have a map/reduce job I coded up to play with this and there is this
line that sets the table

 

TableMapReduceUtil.initTableReducerJob(tableName, null, job); //seems to
apply to all puts that occur

 

Then the Put objects take a column family but no table so it seems like
I can only operate on the table I am currently using?  How to do get/put
from other tables?

 

I am trying to stuff activity in a map/reduce but the map phase needs to
look up the account and create it not exist and a bunch of other
get/puts from other tables as millions of activity come into my system
in a batch job.

 

Thanks,

Dean

 

 

 


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Re: how to write to multiple hbase tables in my Mapper class?

[Jean-Daniel Cryans <jd...@apache.org>]

Use the normal Java API in your job to do that e.g. HTable.

J-D

On Thu, Jan 27, 2011 at 7:48 AM, Hiller, Dean  (Contractor)
<de...@broadridge.com> wrote:
> I have a map/reduce job I coded up to play with this and there is this
> line that sets the table
>
>
>
> TableMapReduceUtil.initTableReducerJob(tableName, null, job); //seems to
> apply to all puts that occur
>
>
>
> Then the Put objects take a column family but no table so it seems like
> I can only operate on the table I am currently using?  How to do get/put
> from other tables?
>
>
>
> I am trying to stuff activity in a map/reduce but the map phase needs to
> look up the account and create it not exist and a bunch of other
> get/puts from other tables as millions of activity come into my system
> in a batch job.
>
>
>
> Thanks,
>
> Dean
>
>
>
>
>
>
>
>
> This message and any attachments are intended only for the use of the addressee and
> may contain information that is privileged and confidential. If the reader of the
> message is not the intended recipient or an authorized representative of the
> intended recipient, you are hereby notified that any dissemination of this
> communication is strictly prohibited. If you have received this communication in
> error, please notify us immediately by e-mail and delete the message and any
> attachments from your system.
>
>