Bharath,
The mapred package is largely deprecated, as hadoop is moving towards the
mapreduce package. Use mapreduce for any new jobs you write, because mapred
will go away in some future release. For now, both are there to give
developers time to rewrite existing older jobs.
Kevin
On Sat, Oct 3
Tom and Chris ,
Thanks for your replies .. I have seen thr o.a.h.mapred.jobcontrol.Job
and o.a.h.mapreduce.Job .. Only one of them has the above option of
adding a dependent Jobs .. Can anyone tell me the difference between
"mapred" and "mapreduce" packages ..
Thanks in advance
On 10/2/09, Chris
You might find the Cascading project quite useful in this regard.
http://www.cascading.org/
using MapReduceFlow and CascadeConnector classes, you can chain
arbitrary MR jobs together. Cascading will determine the dependencies,
if any, and run the jobs in topological order (independent jobs w
Have a look at the JobControl class - this allows you to set up chains
of job dependencies.
Tom
On Fri, Oct 2, 2009 at 11:29 AM, bharath v
wrote:
> Hi all,
>
> I have a set of map red jobs which need to be cascaded ,i.e, output of MR
> job1 is the input of MR job2. etc..
>
> Can anyone point me
Hi all,
I have a set of map red jobs which need to be cascaded ,i.e, output of MR
job1 is the input of MR job2. etc..
Can anyone point me to the corresponding classes in hadoop 0.20.0 API?
I have seen "x.addDependingJob(y)" function in the yahoo's hadoop tutorial
but that is for the older versio
