“线程中的异常”;“主要”;java.lang.IllegalArgumentException:错误的FS:应为:文件:///
我试图用java实现“线程中的异常”;“主要”;java.lang.IllegalArgumentException:错误的FS:应为:文件:///,java,hadoop,Java,Hadoop,我试图用java实现copyFromLocal命令,下面是我的代码 package com.hadoop; import java.io.IOException; import java.net.URI; import java.net.URISyntaxException; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.f
copyFromLocal
命令,下面是我的代码
package com.hadoop;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
public class CopyFromLocal {
public static void main(String[] args) throws IOException, URISyntaxException {
Configuration conf =new Configuration();
conf.addResource(new Path("/usr/hdp/2.3.0.0-2557/hadoop/conf/core-site.xml"));
conf.addResource(new Path("/usr/hdp/2.3.0.0-2557/hadoop/conf/mapred-site.xml"));
conf.addResource(new Path("/usr/hdp/2.3.0.0-2557/hadoop/conf/hdfs-site.xml"));
FileSystem fs = FileSystem.get(conf);
Path sourcePath = new Path("/root/sample.txt");
Path destPath = new Path("hdfs://sandbox.hortonworks.com:8020/user/Deepthy");
if(!(fs.exists(destPath)))
{
System.out.println("No Such destination exists :"+destPath);
return;
}
fs.copyFromLocalFile(sourcePath, destPath);
}
}
我得到以下例外情况:
Exception in thread "main" java.lang.IllegalArgumentException: Wrong FS: hdfs://sandbox.hortonworks.com:8020/user/Deepthy, expected: file:///
at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:305)
at org.apache.hadoop.fs.RawLocalFileSystem.pathToFile(RawLocalFileSystem.java:47)
at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:357)
at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:245)
at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:643)
at com.amal.hadoop.CopyFromLocal.main(CopyFromLocal.java:27)
我将这些JAR添加到类路径:hadoop-0.20.1-core.jar
commons-logging-1.1.3.jar
请告诉我哪里出了问题。如下更改配置
conf.set("fs.default.name","hdfs://sandbox.hortonworks.com:8020");
请在目标路径中指定一个相对路径,如
Path destPath = new Path("/user/Deepthy");
当我将其更改为
Path destPath=newpath(“/user/Deepthy”)时,这将解决这个问题代码>我得到的输出为-不存在这样的目的地:/user/Deepthy