Hi sheikhar
The deprecated job constructor is actually deprecated according to the job
source code .
There is another constructor witch is not deprecated ,you can find in the
hint raised by eclipse .
发自我的 iPhone
在 2013-4-24，13:53，Chandrashekhar Kotekar <shekhar.kote...@gmail.com> 写道：
> Hi,
>
>
> I have observed that there are multiple ways to write driver method of Hadoop
> program.
>
> Following method is given in Hadoop Tutorial by Yahoo
>
>
> public void run(String inputPath, String outputPath) throws Exception {
> JobConf conf = new JobConf(WordCount.class);
> conf.setJobName("wordcount");
>
> // the keys are words (strings)
> conf.setOutputKeyClass(Text.class);
> // the values are counts (ints)
> conf.setOutputValueClass(IntWritable.class);
>
> conf.setMapperClass(MapClass.class);
> conf.setReducerClass(Reduce.class);
>
> FileInputFormat.addInputPath(conf, new Path(inputPath));
> FileOutputFormat.setOutputPath(conf, new Path(outputPath));
>
> JobClient.runJob(conf);
> }
> and this method is given in Hadoop The Definitive Guide 2012 book by Oreilly.
>
>
> public static void main(String[] args) throws Exception {
> if (args.length != 2) {
> System.err.println("Usage: MaxTemperature <input path> <output path>");
> System.exit(-1);
> }
> Job job = new Job();
> job.setJarByClass(MaxTemperature.class);
> job.setJobName("Max temperature");
> FileInputFormat.addInputPath(job, new Path(args[0]));
> FileOutputFormat.setOutputPath(job, new Path(args[1]));
> job.setMapperClass(MaxTemperatureMapper.class);
> job.setReducerClass(MaxTemperatureReducer.class);
> job.setOutputKeyClass(Text.class);
> job.setOutputValueClass(IntWritable.class);
> System.exit(job.waitForCompletion(true) ? 0 : 1);
> }
> While trying program given in Oreilly book I found that constructors of Job
> class are deprecated. As Oreilly book is based on Hadoop 2 (yarn) I was
> surprised to see that they have used deprecated class.
>
> I would like to know which method everyone uses?
>
>
>
>
>
>
>
>
> Regards,
> Chandrash3khar K0tekar
> Mobile - 8884631122
>
