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Posted to user@hbase.apache.org by Vishal Kapoor <vi...@gmail.com> on 2011/03/22 18:34:18 UTC

JobControl and HBase MR chaining

with JobControl not rewritten under mapreduce and continues to be
under mapred( hadoop version 20.2)  expecting subclasses of Mapper
from mapred

how do we use TableMapper and TableReducer to chain jobs?

I am utterly confused, any ray of hope?

thanks,
Vishal

Re: JobControl and HBase MR chaining

Posted by Vishal Kapoor <vi...@gmail.com>.

sorry about the confusion on job chaining,
i have few set of map reduce jobs which are interdependent. not
multiple mappers for a single task.

Vishal

On Tue, Mar 22, 2011 at 3:16 PM, Doug Meil
<do...@explorysmedical.com> wrote:
>
> You need to execute two Jobs serially that use TableMapper in a thread.  Can't use JobControl.
>
>
> -----Original Message-----
> From: Vishal Kapoor [mailto:vishal.kapoor.in@gmail.com]
> Sent: Tuesday, March 22, 2011 1:34 PM
> To: user@hbase.apache.org
> Subject: JobControl and HBase MR chaining
>
> with JobControl not rewritten under mapreduce and continues to be under mapred( hadoop version 20.2)  expecting subclasses of Mapper from mapred
>
> how do we use TableMapper and TableReducer to chain jobs?
>
> I am utterly confused, any ray of hope?
>
> thanks,
> Vishal
>

RE: JobControl and HBase MR chaining

Posted by Doug Meil <do...@explorysmedical.com>.

You need to execute two Jobs serially that use TableMapper in a thread.  Can't use JobControl.  

-----Original Message-----
From: Vishal Kapoor [mailto:vishal.kapoor.in@gmail.com] 
Sent: Tuesday, March 22, 2011 1:34 PM
To: user@hbase.apache.org
Subject: JobControl and HBase MR chaining

with JobControl not rewritten under mapreduce and continues to be under mapred( hadoop version 20.2)  expecting subclasses of Mapper from mapred

how do we use TableMapper and TableReducer to chain jobs?

I am utterly confused, any ray of hope?

thanks,
Vishal