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From: Amogh Vasekar <amogh@yahoo-inc.com>
To: "common-user@hadoop.apache.org" <common-user@hadoop.apache.org>
Date: Tue, 5 Jan 2010 17:39:10 +0530
Subject: Re: Configuration.set/Configuration.get now working
Thread-Topic: Configuration.set/Configuration.get now working
Thread-Index: AcqM3MFJVmubY4+JSJqizVZV8Gq96wBIyHXw
Message-ID: <C76929BE.59CF%amogh@yahoo-inc.com>
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Hi,

1. map.input.file in new API is contentious. It doesn't seem to be seralize=
d in .20 ( https://issues.apache.org/jira/browse/HADOOP-5973 ) . As of now =
you can use ((FileSplit)context.getInputSplit).getPath() , there was a post=
 on this sometime back.

2. for your own variables in conf, please ensure you set them first and the=
n provide to job. For eg this works for me :
Configuration conf =3D new Configuration();
        conf.set("myprop","i_set_this");
        conf.set("mapred.job.queue.name","queue");
Job myjob =3D new Job(conf);

And then in setup
System.out.println("property is " + context.getConfiguration().get("myprop"=
,"failed"));

Hope this helps

Amogh

On 1/4/10 6:52 AM, "Farhan Husain" <farhan.husain@csebuet.org> wrote:

Hello all,

I am still stuck with the following problem. Can anyone please help me?

Thanks,
Farhan

On Wed, Dec 30, 2009 at 11:21 AM, Farhan Husain
<farhan.husain@csebuet.org>wrote:

> Hello,
>
> I am using hadoop-0.20.1. I need to know the input file name in my map
> processes and pass an integer and a string to my reduce processes. I used
> the following method calls for that:
>
> config.set("tag1", "string_value");
> config.setInt("tag2", int_value);
>
> In setup method of mapper:
> String filename =3D
> context.getConfiguration().get("map.input.file")            // returns nu=
ll
>
> In setup method of reducer:
> String val =3D
> context.getConfiguration().get("tag1");                                //
> returns null
> int n =3D context.getConfiguration().getInt("tag2",
> def_val);                        // returns def_val
>
> Can anyone please tell me what may be wrong with this code or anything
> related to it?
>
> Thanks,
> Farhan
>


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