MapReduce之WordCount、FlowCount代码汇总

运行环境：Hadoop1.1.2 WordCount代码：

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运行环境：Hadoop1.1.2 FlowCount代码汇总

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运行环境：Hadoop1.1.2 FlowCount2代码汇总

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运行环境：Hadoop1.1.2 FlowCount3代码汇总

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运行环境：Hadoop1.1.2 TopK

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运行环境：Hadoop1.1.2 Sort

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public class  Bean   implements WritableComparable<Bean>   //泛型类{    private long num1;  //在日志中获取我们所需要的字段     private long num2;    public  Bean(){}    public  Bean(String num1,String num2)    {        this.num1 = Long.parseLong(num1);        this.num2 = Long.parseLong(num2);    }    public long getNum1()    {        return num1;    }    public long getNum2()    {        return num2;    }    @Override    public void write(DataOutput out) throws IOException    {        out.writeLong(num1);        out.writeLong(num2);        }    @Override    public void readFields(DataInput in) throws IOException    {        this.num1 = in.readLong();        this.num2 = in.readLong();      }    @Override  //指定比较的标准    public int compareTo(Bean obj)    {       if(this.num1 != obj.num1)           return (int)(obj.num1 - this.num1);  //降序       else           return (int)(this.num2 - obj.num2);  //升序排列    }      public String toString()    {        return this.num1+"\t"+this.num2;    }}

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