How can I include a python package with Hadoop streaming job?

Question

I am trying include a python package (NLTK) with a Hadoop streaming job, but am not sure how to do this without including every file manually via the CLI argument, \"-file\"

Answer 1

Just came across this gem of a solution: http://blog.cloudera.com/blog/2008/11/sending-files-to-remote-task-nodes-with-hadoop-mapreduce/

first create zip w/ the libraries desired

zip -r nltkandyaml.zip nltk yaml
mv ntlkandyaml.zip /path/to/where/your/mapper/will/be/nltkandyaml.mod

next, include via Hadoop stream "-file" argument:

hadoop -file nltkandyaml.zip

finally, load the libaries via python:

import zipimport
importer = zipimport.zipimporter('nltkandyaml.mod')
yaml = importer.load_module('yaml')
nltk = importer.load_module('nltk') 

Additionally, this page summarizes how to include a corpus: http://www.xcombinator.com/2009/11/18/how-to-use-cascading-with-hadoop-streaming/

download and unzip the wordnet corpus

cd wordnet
zip -r ../wordnet-flat.zip *

in python:

wn = WordNetCorpusReader(nltk.data.find('lib/wordnet-flat.zip'))