添加%2F的Hadoop路径

时间:2014-07-18 11:03:53

标签: java linux hadoop

我在hadoop中有一个文件:/home/hduser/IH/input/imageslocalpaths.txt(我已经检查过它是否使用hadoop fs -ls IH / input / imageslocalpaths.txt)。 我跑的时候:

hadoop jar IH.jar IH/input/imageslocalpaths.txt

我明白了:

Input path does not exist: hdfs://localhost:54310/user/hduser/IH%2Finput%2Fimageslocalpaths.txt

有谁能告诉我如何阻止Hadoop将斜线更改为%2F或其他解决方法?

(我已经尝试了完整的路径,但是hadoop只是将它添加到/ user / hduser的末尾,给出/ user / hduser / user / hduser ...仍然使用%2F)。

这里的请问是我的主要内容(你想要其他位吗?)

    public static void main(String[] args) throws Exception {

        Configuration conf = new Configuration();
        Configuration conf2 = new Configuration();

        conf.set("fs.defaultFS", "hdfs://localhost:54310");

        String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();

        Job job1 = new Job(conf, "MergeImages");

        job1.setJarByClass(ImageHandlerMain.class);
        job1.setMapperClass(BinaryFilesToHadoopSequenceFileMapper.class);
        job1.setOutputKeyClass(Text.class);
        job1.setOutputValueClass(BytesWritable.class);

        FileInputFormat.addInputPath(job1, new Path(URLEncoder.encode(otherArgs[0],"UTF-8")));
        job1.setInputFormatClass(TextInputFormat.class);     

        FileOutputFormat.setOutputPath(job1, new Path(URLEncoder.encode(otherArgs[1],"UTF-8"))); //put result into intermediate folder
        job1.setInputFormatClass(TextInputFormat.class);
        job1.setOutputFormatClass(SequenceFileOutputFormat.class);
        ControlledJob cJob1 = new ControlledJob(conf);
        cJob1.setJob(job1);

        Job job2 = new Job(conf2,"FindDuplicates");

        job2.setJarByClass(ImageHandlerMain.class);
        job2.setMapperClass(ImagePHashMapper.class); 
        job2.setReducerClass(ImageDupsReducer.class);
        job2.setOutputKeyClass(Text.class);
        job2.setOutputValueClass(Text.class);        
        FileInputFormat.addInputPath(job2, new Path(URLEncoder.encode(otherArgs[1],"UTF-8") + "/part-r-00000")); //get the part-r-00000 file from the intermediate folder
        FileOutputFormat.setOutputPath(job2, new  Path(otherArgs[2])); //put result into output folder
        job2.setInputFormatClass(SequenceFileInputFormat.class);
        ControlledJob cJob2 = new ControlledJob(conf2);
        cJob2.setJob(job2);
        JobControl jobctrl = new JobControl("jobctrl");
        jobctrl.addJob(cJob1);
        jobctrl.addJob(cJob2);
        cJob2.addDependingJob(cJob1);
        jobctrl.run();


}

2 个答案:

答案 0 :(得分:1)

问题出在这行代码中

FileInputFormat.addInputPath(job2, new Path(URLEncoder.encode(otherArgs[1],"UTF-8") + "/part-r-00000")); //get the part-r-00000 file from the intermediate folder

在这里,当您在创建路径时使用URLEncoder.encode时,它正在转换" /"到%2F。

可能的解决方案

FileInputFormat.addInputPath(job2, new Path(URLEncoder.encode(otherArgs[1],"UTF-8").replace("%2F", "/") + "/part-r-00000")); //get the part-r-00000 file from the intermediate folder

编码后只需替换"%2F"用替换方法回到" /"。

答案 1 :(得分:0)

我不确定问题可能来自哪里,但请尝试检查以下内容:

  • 解析
  • 中的参数后,检查网址格式是否正确
  

String [] otherArgs = new GenericOptionsParser(conf,args).getRemainingArgs();

  • 尝试创建不带URL编码器的路径,如下所示:
  

FileInputFormat.setInputPaths(job,new Path(inputLocation)); //其中inputLocation只是一个String