如何在Java代码中使用S3DistCp [英] How to use S3DistCp in java code

问题描述

我想以语法方式将作业的输出从EMR集群复制到Amazon S3.

I want to copy output of job from EMR cluster to Amazon S3 pro-grammatically.

如何在Java代码中使用S3DistCp进行相同操作.

How to use S3DistCp in java code to do the same.

推荐答案

hadoop ToolRunner可以运行它.

下面是用法示例:

hadoop ToolRunner can run this.. since S3DistCP extends Tool

Below is the usage example:

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.util.ToolRunner;
import com.amazon.external.elasticmapreduce.s3distcp.S3DistCp

public class CustomS3DistCP{
  private static final Log log = LogFactory.getLog(CustomS3DistCP.class);

public static void main(String[] args) throws Exception {
     log.info("Running with args: " + args);

     System.exit(ToolRunner.run(new S3DistCp(), args));
   }

您的类路径中必须有s3distcp jar 您可以从Shell脚本调用此程序.

you have to have s3distcp jar in your classpath You can call this program from a shell script.

希望有帮助！

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