hadoop - 使用 HDFS copyFromLocalFile 时出现校验和错误

Question

        try {
        conf = new org.apache.hadoop.conf.Configuration();
        //conf.set("fs.default.name", "hdfs://zal:9000");
        hdfs = FileSystem.get(conf);
        Path src = new Path(urlTmpFile);
        Path dst = new Path(ipPath);
        hdfs.copyFromLocalFile(false, true, src, dst);
        //hdfs.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        log.error("updateLocalFileToHDFS failed" + e.getMessage() );
    }

错误信息是校验和错误真的让我很困惑！

12/09/07 06:19:18 INFO fs.FSInputChecker: Found checksum error: b[0, 20]=687474703a2f2f77772e62616964752e636f6d0a
org.apache.hadoop.fs.ChecksumException: Checksum error: url.txt at 0

有没有关于如何做到这一点的提示或示例？