使用Runtime.exec从JAVA运行hadoop jar命令 [英] Running hadoop jar command from JAVA using Runtime.exec

问题描述

我正在尝试使用Runtime.exec从JAVA运行hadoop jar命令. 下面是示例代码:

I am trying to run an hadoop jar command from JAVA using Runtime.exec. Below is the sample code:

Runtime.getRuntime().exec(new String[]{"bin/hadoop", "jar /home/hadoop/jar/test.jar /user/hduser/myinput/input /user/hduser/newoutput"});

但是我没有得到想要的输出.以下是我想从JAVA执行的hadoop命令:

However I am not getting the desired output. Below is my hadoop command which I want to execute from JAVA:

bin/hadoop jar /home/hadoop/jar/test.jar /user/hduser/myinput/input /user/hduser/newoutput

我也没有任何例外.使用Runtime.getRuntime().exec的方式是否错误?

I am not getting any exception as well. Is the way Runtime.getRuntime().exec is used is wrong?

推荐答案

用以下命令替换您的命令:

Replace your command with following command:

Runtime.getRuntime().exec("HADOOP_HOME/bin/hadoop jar /home/hadoop/jar/test.jar /user/hduser/myinput/input /user/hduser/newoutput");

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