Haha gotcha, I am not the greatest at all this package management. I think we are getting close though... I added jython.jar, as well as my test.py file, and here is what I got when I ran it
*sys-package-mgr*: processing new jar, '/home/jcoveney/pig-0.8.0/pig.jar' *sys-package-mgr*: processing new jar, '/home/jcoveney/udfs/test.jar' 2010-12-29 17:56:47,118 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not resolve compress.compressuid using imports: [, org.apache.pig.builtin., org.apache.pig.impl.builtin.] (I got the java thing because I ported my UDF to java to see if it would be any easier...) Here is the command I used to run it java -cp $PIGPATH/pig.jar:$PIG_CLASSPATH org.apache.pig.Main -x local udftest.pig $PIG_CLASSPATH = /home/jcoveney/usefulpig/conf:/home/jcoveney/jython/jython.jar:/home/jcoveney/udfs/test.jar:/home/jcoveney/udfs/test.py Now, whether I use the python version or the java version, I get an error (well, the first one only applies to the python) init: Bootstrapping class not in Py.BOOTSTRAP_TYPES[class=class org.python.core.PyStringMap] 2010-12-29 18:03:02,967 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not resolve test.test using imports: [, org.apache.pig.builtin., org.apache.pig.impl.builtin.] Any ideas? I followed the UDF manual, but perhaps my naming or something is off? I have no idea. Would love any help you can throw at me... 2010/12/29 [email protected] <[email protected]> > I think you took Dmitriy a bit to litterally ;) > > you need to put the actual filenames of the jars into PIG_CLASSPATH. > If /home/jcoveney/usefulpig/conf:/home/jcoveney/jython > is the directory that contains jython.jar (used purely as an example, I'm > not certain what the actualy jar name is) then your PIG_CLASSPATH should > echo to: > > /home/jcoveney/jython/jython.jar > > plus whatever other jars you want to include. > > 2010/12/29 Jonathan Coveney <[email protected]> > > > Wait, ignore that error, that was the wrong one. > > > > This is it: > > > > ERROR org.apache.pig.tools.grunt.Grunt - ERROR 2998: Unhandled internal > > error. org/python/util/PythonInterpreter > > > > (I had set the classpath incorrectly, to *.* not ***) > > > > 2010/12/29 Jonathan Coveney <[email protected]> > > > > > echo $PIG_CLASSPATH > > > /home/jcoveney/usefulpig/conf:/home/jcoveney/jython/*** > > > > > > same error > > > > > > 2010-12-29 16:59:29,862 [main] ERROR org.apache.pig.tools.grunt.Grunt - > > > ERROR 2998: Unhandled internal error. Could not initialize class > > > org.apache.pig.scripting.jython.JythonScriptEngine$Interpreter > > > > > > :S > > > > > > I really love that UDF's can be written in python...thanks for helping > me > > > try to get there. > > > > > > 2010/12/29 Dmitriy Ryaboy <[email protected]> > > > > > > You need to set the classpath to include the literal jar strings, not > > just > > >> the directory that contains them. > > >> Try, /home/jcoveney/usefulpig/conf:/home/jcoveney/jython/*** > > >> > > >> D > > >> > > >> On Wed, Dec 29, 2010 at 11:32 AM, Jonathan Coveney < > [email protected] > > >> >wrote: > > >> > > >> > Ok, strangely enough, it won't run locally either... it sees the > file, > > >> but > > >> > it's giving me an interpreter not found error, so it must be > something > > >> > else. > > >> > > > >> > PIG_CLASSPATH is equal > > >> > to /home/jcoveney/usefulpig/conf:/home/jcoveney/jython > > >> > and here is my test script > > >> > > > >> > register '/home/jcoveney/udfs/pytest.py' using jython as comp; > > >> > > > >> > the_in = LOAD 'input.txt' AS (thing:chararray); > > >> > the_out = FOREACH the_out GENERATE comp.computation(thing) > > >> > DUMP theout; > > >> > > > >> > but I don't think it's getting that far... it's still giving me the > > same > > >> > error. I'm just running it "pig -x local script.pig" > > >> > > > >> > > > >> > 2010/12/29 Jonathan Coveney <[email protected]> > > >> > > > >> > > Ah, that might be it... my computer has it and I have it on my > path, > > >> > > however, I do not know if the cluster has it... definitely > something > > >> to > > >> > look > > >> > > into. thanks. > > >> > > > > >> > > > > >> > > 2010/12/29 [email protected] <[email protected]> > > >> > > > > >> > >> try adding the full path to the jar via PIG_CLASSPATH like so: > > >> > >> > > >> > >> export PIG_CLASSPATH=/path/to/jython.jar > > >> > >> > > >> > >> then run pig. Also, I assume your doing your testing on a local > > >> machine? > > >> > >> if > > >> > >> it's on a cluster, you need to make sure jython is on all the > > worker > > >> > nodes > > >> > >> and classpath is setup properly on all of them as well. > > >> > >> > > >> > >> On Wed, Dec 29, 2010 at 9:57 AM, Jonathan Coveney < > > >> [email protected] > > >> > >> >wrote: > > >> > >> > > >> > >> > I do have Jython installed and on PATH, but maybe I didn't > > include > > >> it > > >> > in > > >> > >> > the > > >> > >> > right way? Where does it need to be? > > >> > >> > > > >> > >> > 2010/12/29 [email protected] <[email protected]> > > >> > >> > > > >> > >> > > Do you have Jython on your classpath? Currently Jython isn't > > >> > >> distributed > > >> > >> > in > > >> > >> > > the 0.8.0 release tarball. > > >> > >> > > > > >> > >> > > On Mon, Dec 27, 2010 at 7:18 PM, Jonathan Coveney < > > >> > [email protected] > > >> > >> > > >wrote: > > >> > >> > > > > >> > >> > > > Oh and just to be sure, I have tried > > >> > >> > > > @outputSchema("word:chararray") > > >> > >> > > > @outputSchema("x:{t:(word:chararray)}") > > >> > >> > > > as well (the former of which seems to be the "right" one, > > >> whenever > > >> > I > > >> > >> > can > > >> > >> > > > figure out what is wrong) > > >> > >> > > > > > >> > >> > > > I've tested my code separately in python and it is fine... > > >> > >> > > > > > >> > >> > > > 2010/12/28 Jonathan Coveney <[email protected]> > > >> > >> > > > > > >> > >> > > > > Aniket, I appreciate you taking a look at this. In > general, > > I > > >> > >> found > > >> > >> > the > > >> > >> > > > > documentation around outputSchema pretty confusing... for > > >> > example, > > >> > >> in > > >> > >> > > > this > > >> > >> > > > > example > > >> > >> > > > > > > >> > >> > > > > @outputSchema("x:{t:(word:chararray)}") > > >> > >> > > > > def helloworld(): > > >> > >> > > > > return ('Hello, World') > > >> > >> > > > > > > >> > >> > > > > > > >> > >> > > > > Then, in the sample script below that, you have > > >> > >> > > > > > > >> > >> > > > > @outputSchema("t:(numformat:chararray)") > > >> > >> > > > > def commaFormat(num): > > >> > >> > > > > return '{:,}'.format(num) > > >> > >> > > > > > > >> > >> > > > > In this case, you have lost the x:{} (which makes more > > sense > > >> to > > >> > >> me. > > >> > >> > > > > > > >> > >> > > > > Perhaps this is because the latter function is meant to > > >> operate > > >> > on > > >> > >> an > > >> > >> > > > input > > >> > >> > > > > and return a type (t), whereas the hello world function > > >> should > > >> > be > > >> > >> > able > > >> > >> > > to > > >> > >> > > > > stand alone, and thus, has to return a bag? Not sure... > > >> > >> > > > > > > >> > >> > > > > Besides that, though, I changed my code per your > suggestion > > >> and > > >> > >> tried > > >> > >> > > > > > > >> > >> > > > > @outputSchema("t:(word:chararray)") > > >> > >> > > > > > > >> > >> > > > > and still got the error. > > >> > >> > > > > > > >> > >> > > > > As a note, do I need to import anything in the python > > script > > >> for > > >> > >> > > > > outputSchema to work, or should it be fine since pig is > > >> grabbing > > >> > >> it? > > >> > >> > > > > > > >> > >> > > > > Once again, I really appreciate your help in the matter. > I > > >> feel > > >> > >> > having > > >> > >> > > > > people who weren't intimately related to the project have > a > > >> go > > >> > at > > >> > >> it > > >> > >> > is > > >> > >> > > > how > > >> > >> > > > > you make it ultimately more usable and useful...but you > > have > > >> to > > >> > >> > answer > > >> > >> > > > some > > >> > >> > > > > annoying questions on the way :P > > >> > >> > > > > > > >> > >> > > > > Thanks again. > > >> > >> > > > > > > >> > >> > > > > 2010/12/28 Aniket Mokashi <[email protected]> > > >> > >> > > > > > > >> > >> > > > > I think decorator used here is incorrect. > > >> > >> > > > >> In general, "output:chararray" needs to be > > >> > >> schema-string-compatible. > > >> > >> > > > Also, > > >> > >> > > > >> you are using "outputSchemaFunction", which is used in > > case > > >> you > > >> > >> want > > >> > >> > > to > > >> > >> > > > >> write a udf that has output schema dependent on input > > schema > > >> > (ęg > > >> > >> > > > -square) > > >> > >> > > > >> and this should have a function with decorator > > >> "schemaFunction" > > >> > >> > (named > > >> > >> > > > >> "output" in your case). I think using "outputSchema" > > >> decorator > > >> > >> would > > >> > >> > > fix > > >> > >> > > > >> the problem here. > > >> > >> > > > >> > > >> > >> > > > >> More details can be found at- > > >> > >> > > > >> http://wiki.apache.org/pig/UDFsUsingScriptingLanguages > > >> > >> > > > >> > > >> > >> > > > >> Thanks, > > >> > >> > > > >> Aniket > > >> > >> > > > >> > > >> > >> > > > >> On Mon, December 27, 2010 4:30 pm, Jonathan Coveney > wrote: > > >> > >> > > > >> > so I have module.py, and I want to be able to use it > in > > a > > >> pig > > >> > >> > > script. > > >> > >> > > > It > > >> > >> > > > >> > has no special imports or anything. I do have > > >> > >> > > > >> > @outputSchemaFunction("output:chararray) > > >> > >> > > > >> > > > >> > >> > > > >> > > > >> > >> > > > >> > In my pig script, I have this > > >> > >> > > > >> > > > >> > >> > > > >> > > > >> > >> > > > >> > register '/my/udf/location/udf.py' using jython as > > myfunc; > > >> > >> > > > >> > > > >> > >> > > > >> > is there any reason why this wouldn't work? here is > the > > >> error > > >> > I > > >> > >> > get: > > >> > >> > > > >> > > > >> > >> > > > >> > 2010-12-27 16:29:41,288 [main] ERROR > > >> > >> > > org.apache.pig.tools.grunt.Grunt > > >> > >> > > > - > > >> > >> > > > >> > ERROR 2998: Unhandled internal error. > > >> > >> > > > org/python/util/PythonInterpreter > > >> > >> > > > >> > > > >> > >> > > > >> > > > >> > >> > > > >> > Not the most instructive error, but is there anything > > more > > >> I > > >> > >> need > > >> > >> > to > > >> > >> > > > be > > >> > >> > > > >> > doing to be able to use a python UDF? > > >> > >> > > > >> > > > >> > >> > > > >> > As an aside, are simply python UDF's as efficient as > > Java > > >> > ones? > > >> > >> I > > >> > >> > > like > > >> > >> > > > >> > Python a lot and love the idea of being able to UDF in > > it, > > >> > but > > >> > >> can > > >> > >> > > use > > >> > >> > > > >> > java if necessary. > > >> > >> > > > >> > > > >> > >> > > > >> > > >> > >> > > > >> > > >> > >> > > > >> > > >> > >> > > > > > > >> > >> > > > > > >> > >> > > > > >> > >> > > > > >> > >> > > > > >> > >> > > -- > > >> > >> > > http://about.me/soren/bio > > >> > >> > > > > >> > >> > > > >> > >> > > >> > >> > > >> > >> > > >> > >> -- > > >> > >> http://about.me/soren/bio > > >> > >> > > >> > > > > >> > > > > >> > > > >> > > > > > > > > > > > > -- > http://about.me/soren/bio >
