Question

I am doing as below
FileSystem fs = FileSystem.get(new URI("hdfs://IP:PORT"), context.getConfiguration());

            path = new Path("/AAP");
            fsOutStream = fs.create(path);
            // read this file into InputStream
            inputStream = new ByteArrayInputStream(value.getBytes());

            IOUtils.copyBytes(inputStream, fsOutStream, context.getConfiguration());  //After this step a new folder AAP is available on HDFS

            //Problem in below step
            fs.copyToLocalFile(path, new Path("/xyz")); //After this step i am expecting that a folder local to DataNode with name "xyz" should be available but its not

注意：我只有一个DataNode，MapRed正在成功运行

有人可以建议可能是什么问题吗？

Answer 1

要检查的事项：

您是否有权写入根目录？

尝试使用完整的网址：fs.copyToLocalFile(path, new Path("file:///home/hadoop/xyz"));

copyToLocal不会将文件本地复制到DataNode

1 个答案: