Hi Dan,
1. Can't you print out the error messages by calling getErrorStream() on
the sub-process?
2. Is there any reason why you spawn a sub-process process rather than use
PigServer API?
Thanks,
Cheolsoo
On Wed, Jan 23, 2013 at 10:07 PM, Dan Yi <d...@medio.com> wrote:
> 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.
>
>
