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MapReduce, mail # user - 0.21.0 API


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Re: 0.21.0 API
Tom White 2010-09-22, 14:08
Hi Martin,

Neither Tool nor ToolRunner is deprecated in 0.21.0. I don't think
they have ever been deprecated. You should be able to use them without
problems.

Tom

On Wed, Sep 22, 2010 at 6:52 AM, Martin Becker <[EMAIL PROTECTED]> wrote:
> Hello,
> I am trying to move to Hadoop MapReduce 0.21.0.
> The corresponding tutorial still uses Tool and ToolRunner.
> Yet both are deprecated. What would be the correct way to implement,
> configure and submit a Job now? I was thinking in terms of:
>     Configuration configuration = new Configuration();         Cluster
> cluster = new Cluster(configuration);     Job job > Job.getInstance(cluster);
>     job.setJarByClass(WordCount.class);     job.setMapperClass(Map.class);
>     job.setCombinerClass(Reduce.class);
> job.setReducerClass(Reduce.class);     job.setOutputKeyClass(Text.class);
>     job.setOutputValueClass(IntWritable.class);
>     FileInputFormat.addInputPath(job, new Path(INPUT));
> FileOutputFormat.setOutputPath(job, new Path(OUTPUT));
>     System.exit(job.waitForCompletion(true) ? 0 : 1); Thanks in advance,
> Martin
>