hadoop中用hipi创建hib

Map：
public static class HibMapper extends Mapper{

    public void map(Object key,Object value,Context context) throws IOException,InterruptedException {
        Configuration conf=new Configuration();
        conf.set("fs.defaultFS", "hdfs://192.168.10.2:9000");       

        HipiImageBundle hib = new HipiImageBundle(new Path("/test/output/corel/test/coreltest.hib"), conf);
        hib.open(AbstractImageBundle.FILE_MODE_WRITE,true);
        String path = value.toString();
        try{    
            File file = new File(path);                 
            FileInputStream fis=new FileInputStream(file);
            hib.addImage(fis,ImageType.JPEG_IMAGE);                         
        }catch (IOException e) {
            System.err.println("Connection error to image !" );

        }
       hib.close();
       System.out.println(path);
       context.write(new Text(path.toString()), new Text(hib.getPath().toString()));                  


    }       
}
Reduce 空，得到的hib文件只包括最后一张图片，System.out.println(path)中可以输出所有路径，原因出在哪里？

每次创建的hib都覆盖掉前一次了，应用hib.addImage()方法，每次添加