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Pig, mail # user - execute pig command in Java program


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execute pig command in Java program
Dan Yi 2013-01-24, 06:07
Hi,

I used to write PHP code to execute pig command, it worked well,
Now I switch to Java but seems it won't work, here is my code:

String pigCommand = "pig -x local -p ouput=/tmp my_pig_script.pig";

Runtime r = Runtime.getRuntime();
Process p;

int exitVal;

try {
p = r.exec(pigCommand);
exitVal = p.waitFor();
BufferedReader br = new BufferedReader(new
InputStreamReader(p.getInputStream()));
String line = null;

while((line = br.readLine()) != null) {
System.out.println(line);
}
br.close();

System.out.println("exitVal: " + exitVal);
System.out.println("Done");

If I run the that pig command in console directly, it works, if I replace
that
Pig command with other shell command say 'ping www.yahoo.com', and run the
java
Program, it works too. So what might be the problem?

Thanks.