I have a mapper
    public class BuildGraph{
       public void config(JobConf job){ *<==this block doesnt seems to be
exexcuting at all :(*
        super.configure(job);
        this.currentId = job.getInt("currentId",0);
        if (this.currentId!=0){
        // I call a method from differnt class to build a distributed cache
        }
       }
      public void map(....){
    ....
    }
}

now the main code where this is called..

    public void run( String params,curId){
     JobConf conf = new JobConf(classname.class);
     conf.setInt("currentId",299); <*--note this i am setting the value here
*
     conf.setMapperClass(Mapper.class);
     //....
      JobClient.runJob(conf);
    }

But the problem is config method in the code is not executing as though
"currentId" returns 299 in main loop but it is not set at all in the mapper
class.
what am i doing wrong

Hi Jamal

i think you use the old MR API, you should implements the Mapper interface.

Maybe you can take a look an WordCount.java example in
example.org.apache.hadoop.examples.
On Wed, Jan 16, 2013 at 10:03 AM, jamal sasha <[EMAIL PROTECTED]> wrote:

> Hi,
>  The relevant code snippet posted here
> http://pastebin.com/DRPXUm62
>
>
> On Tue, Jan 15, 2013 at 5:31 PM, jamal sasha <[EMAIL PROTECTED]>wrote:
>
>> My bad. Sorry I fixed it. It is BuildGraph.class
>>
>>
>> On Tue, Jan 15, 2013 at 5:30 PM, Serge Blazhiyevskyy <
>> [EMAIL PROTECTED]> wrote:
>>
>>> Don't you need to set this
>>>
>>>      conf.setMapperClass(Mapper.class);
>>>
>>> to BuildGraph?
>>>
>>>
>>> Serge
>>>
>>>
>>> SERGE BLAZHIYEVSKY
>>> Architect
>>> (T) +1 (650) 226-0511
>>> (M) +1 (408) 772-2615
>>> [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>
>>> www.nice.com<http://www.nice.com>
>>>
>>>
>>> On Jan 15, 2013, at 5:24 PM, jamal sasha <[EMAIL PROTECTED]<mailto:
>>> [EMAIL PROTECTED]>> wrote:
>>>
>>> I have a mapper
>>>
>>>
>>>     public class BuildGraph{
>>>        public void config(JobConf job){ <==this block doesnt seems to be
>>> exexcuting at all :(
>>>         super.configure(job);
>>>         this.currentId = job.getInt("currentId",0);
>>>         if (this.currentId!=0){
>>>         // I call a method from differnt class to build a distributed
>>> cache
>>>         }
>>>        }
>>>       public void map(....){
>>>     ....
>>>     }
>>> }
>>>
>>> now the main code where this is called..
>>>
>>>     public void run( String params,curId){
>>>      JobConf conf = new JobConf(classname.class);
>>>      conf.setInt("currentId",299); <--note this i am setting the value
>>> here
>>>      conf.setMapperClass(Mapper.class);
>>>      //....
>>>       JobClient.runJob(conf);
>>>     }
>>>
>>> But the problem is config method in the code is not executing as though
>>> "currentId" returns 299 in main loop but it is not set at all in the mapper
>>> class.
>>> what am i doing wrong
>>>
>>>
>>
>
--
Don't Grow Old, Grow Up... :-)

I get an Invalid ID when I try to access pastebin, so I haven't seen the actual code.  But in the snippet below method that is not getting called should be named configure, not config.

public class BuildGraph extends MapReduceBase implements Mapper<> {

@Override
public void configure(JobConf conf) {
                                ...
}

@Override
public void map() {
                ...
}
}

Dave Shine
Sr. Software Engineer
321.939.5093 direct |  407.314.0122 mobile
CI Boost(tm) Clients  Outperform Online(tm)  www.ciboost.com<http://www.ciboost.com/>

From: jamal sasha [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, January 15, 2013 9:04 PM
To: [EMAIL PROTECTED]
Subject: Re: newbie question

Hi,
 The relevant code snippet posted here
http://pastebin.com/DRPXUm62

On Tue, Jan 15, 2013 at 5:31 PM, jamal sasha <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
My bad. Sorry I fixed it. It is BuildGraph.class

On Tue, Jan 15, 2013 at 5:30 PM, Serge Blazhiyevskyy <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
Don't you need to set this

     conf.setMapperClass(Mapper.class);

to BuildGraph?
Serge
SERGE BLAZHIYEVSKY
Architect
(T) +1 (650) 226-0511<tel:%2B1%20%28650%29%20226-0511>
(M) +1 (408) 772-2615<tel:%2B1%20%28408%29%20772-2615>
[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]><mailto:[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>
www.nice.com<http://www.nice.com><http://www.nice.com>
On Jan 15, 2013, at 5:24 PM, jamal sasha <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]><mailto:[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>> wrote:

I have a mapper
    public class BuildGraph{
       public void config(JobConf job){ <==this block doesnt seems to be exexcuting at all :(
        super.configure(job);
        this.currentId = job.getInt("currentId",0);
        if (this.currentId!=0){
        // I call a method from differnt class to build a distributed cache
        }
       }
      public void map(....){
    ....
    }
}

now the main code where this is called..

    public void run( String params,curId){
     JobConf conf = new JobConf(classname.class);
     conf.setInt("currentId",299); <--note this i am setting the value here
     conf.setMapperClass(Mapper.class);
     //....
      JobClient.runJob(conf);
    }

But the problem is config method in the code is not executing as though "currentId" returns 299 in main loop but it is not set at all in the mapper class.
what am i doing wrong

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