我运行应用程序时，DistCp没有获得DistCpOptions配置

Question

我正在尝试使用DistCp类来模拟命令hadoop distcp -update -delete。我用先前配置的DistCp实例化了DistCpOptions。但这似乎没有得到我通过的配置。当我看到跟踪时，我确认设置的标志没有被激活。

package com.keedio.hadoop;        
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.*;
import org.apache.hadoop.tools.DistCp;    
import org.apache.hadoop.tools.DistCpOptionSwitch;
import org.apache.hadoop.tools.DistCpOptions;
import org.apache.hadoop.util.ToolRunner;    
import java.net.URI;
import java.util.Collections;

public class Mover {    
    public static void main(String args []) {    
        try {    
            String arguments [] = {"file:////home/cloudera/Desktop/files","hdfs:////user/cloudera/test"};
            DistCpOptions distCpOptions=new DistCpOptions(new Path("file:////home/cloudera/Desktop/files"),new Path("file:////user/cloudera/test"));
            distCpOptions.setSyncFolder(true);
            distCpOptions.setDeleteMissing(true);

            Configuration conf=new Configuration();
            conf.addResource(new org.apache.hadoop.fs.Path("/etc/hadoop/conf/yarn-site.xml"));
            conf.addResource(new org.apache.hadoop.fs.Path("/etc/hadoop/conf/core-site.xml"));
            conf.addResource(new org.apache.hadoop.fs.Path("/etc/hadoop/conf/mapred-site.xml"));
            conf.addResource(new Path("/etc/hadoop/conf/hdfs-site.xml"));
            conf.set("fs.hdfs.impl", org.apache.hadoop.hdfs.DistributedFileSystem.class.getName());
            conf.set("fs.file.impl", org.apache.hadoop.fs.LocalFileSystem.class.getName());
            DistCp distCp= new DistCp(conf,distCpOptions);
            ToolRunner.run(distCp,arguments);
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }
}

当我运行此代码时，命令行中的配置与我设置的不同。当我在DistCpOptions中将其指定为true时，syncFolder会显示为false。

输入选项：

DistCpOptions{
    atomicCommit=false, syncFolder=false, deleteMissing=false, ignoreFailures=false, 
    overwrite=false, append=false, useDiff=false, useRdiff=false, fromSnapshot=null, 
    toSnapshot=null, skipCRC=false, blocking=true, numListstatusThreads=0, maxMaps=20, 
    mapBandwidth=100, sslConfigurationFile='null', copyStrategy='uniformsize', 
    preserveStatus=[], preserveRawXattrs=false, atomicWorkPath=null, logPath=null, 
    sourceFileListing=null, sourcePaths=[file:/home/cloudera/Desktop/ficheros1], 
    targetPath=hdfs:/user/cloudera/prueba, targetPathExists=true, filtersFile='null', 
    blocksPerChunk=0, copyBufferSize=8192
}