在cloudera linux机器上，我正在获取arrayindexoutofbounds异常：3。
我不明白为什么这个例外是来为这个项目只有其他人是我的罚款。
公共类transactioncount扩展配置的实现工具{

@Override
public int run(String[] arg0) throws Exception {

    if(arg0.length<2)
    {
        System.out.println("Please provide inpt and output directory properly");
        return -1;
    }
    JobConf conf=new JobConf(com.ankur.MRpractice.TransactionCount.class); 

    FileInputFormat.setInputPaths(conf, new Path(arg0[0]),new Path(arg0[1],new Path(arg0[2])));
    FileOutputFormat.setOutputPath(conf,new Path(arg0[3]));

    conf.setMapperClass(TransMapper.class);
    conf.setReducerClass(TransReducer.class);

    conf.setMapOutputKeyClass(Text.class);
    conf.setMapOutputValueClass(IntWritable.class);

    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(IntWritable.class);

    conf.setPartitionerClass(TransPartioner.class);
    conf.setNumReduceTasks(4);

    JobClient.runJob(conf);

    return 0;

}

public static void main(String [] args) throws Exception
{
    int exitCode=ToolRunner.run(new TransactionCount(), args);
    System.exit(exitCode);
}

}