Hi Imen,
You can add "mapred.map.tasks" property in your mapred-site.xml file.
But, it is just a hint for the InputFormat. Actually no. of maps is
actually determined by the no of InputSplits created by the InputFormat.
HTH
Regards,
Mohammad Tariq
On Wed, Dec 12, 2012 at 4:11 PM, imen Megdiche <imen.megdi...@gmail.com>wrote:
> Hi,
>
> I try to force the number of map for the mapreduce job with the command :
> public static void main(String[] args) throws Exception {
>
> JobConf conf = new JobConf(WordCount.class);
> conf.set("mapred.job.tracker", "local");
> conf.set("fs.default.name", "local");
> conf.setJobName("wordcount");
>
> conf.setOutputKeyClass(Text.class);
> conf.setOutputValueClass(IntWritable.class);
>
> conf.setNumMapTask(6);
> conf.setMapperClass(Map.class);
> conf.setCombinerClass(Reduce.class);
> conf.setReducerClass(Reduce.class);
> ...
> }
>
> But it doesn t work.
> What can i do to modify the number of map and reduce tasks.
>
> Thank you
>
