IntWritable.set（IntWritable）拋出錯誤

Question

編寫示例代碼以測試hadoop中的customdata。我收到以下錯誤：

The method set(int) in the type IntWritable is not applicable for the arguments (IntWritable)

我已經檢查了set方法IntWritable.set(int value)。 如何將hadoop IntWritable轉換爲Int，然後返回IntWritable#set方法將轉換回IntWritable。

public class customText implements Writable{ 

private Text depName; 

//default constr 
private IntWritable depId; 
customText(){ 
    this.depName = new Text(); 
    this.depId = new IntWritable(); 

} 

customText(Text depName , IntWritable depId){ 

    this.depName.set(depName); 
    this.depId.set(depId); 

我也試過this.depid=depId但它沒有奏效。

感謝

Answer 1

它應該是：

customText(Text depName , IntWritable depId){ 
    this.depName.set(depName); 
    this.depId.set(depId.get()); 
} 

爲集的方法簽名是set(int value)，所以你必須get()從IntWritable整型。