HDFS HA Name Node Config

gistfile1.java

   public static void main(String[] args) throws Exception {
        if (args.length != 2){
            System.out.println("Usage: pgm <hdfs:///path/to/copy> </local/path/to/copy/from>");
            System.exit(1);
        }

        Configuration conf = new Configuration(false);
        conf.set("fs.defaultFS", "hdfs://nameservice1");
        conf.set("fs.default.name", conf.get("fs.defaultFS"));
        conf.set("dfs.nameservices","nameservice1");
        conf.set("dfs.ha.namenodes.nameservice1", "namenode1,namenode2");
        conf.set("dfs.namenode.rpc-address.nameservice1.namenode1","hadoopnamenode01:8020");
        conf.set("dfs.namenode.rpc-address.nameservice1.namenode2", "hadoopnamenode02:8020");
        conf.set("dfs.client.failover.proxy.provider.nameservice1","org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider");

        FileSystem fs =  FileSystem.get(URI.create(args[0]), conf);
        Path srcPath = new Path(args[1]);
        Path dstPath = new Path(args[0]);
        //in case the same file exists on remote location, it will be overwritten
        fs.copyFromLocalFile(false, true, srcPath, dstPath);
    }