I'm still struggling with parameter substitution.
Below are six examples. Two work, the others don't.
When they don't, I get this error message:
ERROR org.apache.pig.Main - ERROR 2999: Unexpected internal error.
Encountered unexpected arguments on command line - please check the
command line.
$ pig -param COLOR=blue script.pig -- Works
$ pig -param COLOR="blue-green" script.pig -- Works
$ pig -param COLOR="blue green" script.pig -- Fails
$ pig -param COLOR="'blue green'" script.pig -- Fails
$ pig -param COLOR="\'blue green\'" script.pig -- Fails
$ pig -param COLOR="blue\ green" script.pig -- Fails
How do I protect spaces so that I can pass multi-word
parameters into Pig?
Thanks,
Andreas
On Tue, Mar 15, 2011 at 7:23 AM, Alan Gates <[email protected]> wrote:
> If you know before you start the script which you want, you can use
> parameter substitution:
>
> A = load 'foo';
> ...
> Z = foreach Y generate ...;
> $DO_OUTPUT
>
> Then, depending on which you want, run pig with
>
> pig -pDO_OUTPUT='dump Z;';
>
> or
>
> pig -pDO_OUTPUT="store Z into 'outfile';"
>
> If you want to decide which to do based on results of the script, then
> you'll need the new control flow integration features available in 0.9.
> These aren't yet released, but they are in trunk.
>
> Alan.
>
>
> On Mar 14, 2011, at 10:40 PM, Andreas Paepcke wrote:
>
> I want to do something really simple: I want to pass a string
>> into a Pig script. The string is either "stdout" or some target
>> file name. Say the string gets bound to $OUTPUT. That all
>> works fine.
>>
>> After the script has computed a result R, depending on the
>> value of $OUTPUT, I want either to do a dump R (if
>> $OUTPUT == "stdout"), or a STORE of R into the given
>> file name that's held in $OUTPUT.
>>
>> How do I do that conditional? I played with bincond, but
>> got stuck.
>>
>> Thanks!
>>
>> Andreas
>>
>>
>> Andreas
>>
>
>
