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python Programming Glossary: reducerUsing the Python NLTK (2.0b5) on the Google App Engine http://stackoverflow.com/questions/1286301/using-the-python-nltk-2-0b5-on-the-google-app-engine main.py line 13 in module from lingua import reducer File base data home apps xxxx 1.335654715894946084 lingua reducer.py.. File base data home apps xxxx 1.335654715894946084 lingua reducer.py line 11 in module from nltk.tokenizer import File base data..
Generating Separate Output files in Hadoop Streaming http://stackoverflow.com/questions/1626786/generating-separate-output-files-in-hadoop-streaming Streaming Using only a mapper a Python script and no reducer how can I output a separate file with the key as the filename..
Hadoop Streaming: Mapper 'wrapping' a binary executable http://stackoverflow.com/questions/4113798/hadoop-streaming-mapper-wrapping-a-binary-executable to modify my Python code such that I have a mapper and a reducer that I can run on my local machine in the standard ˜test format... in the standard ˜test format. p cat data.txt mapper.py reducer.py The mapper formats each line of data the way the binary it.. want and formats it into lines of text appropriate for the reducer. The problems arise when I try to replicate the command on a..
Hadoop Streaming Job failed error in python http://stackoverflow.com/questions/4460522/hadoop-streaming-job-failed-error-in-python mapper.py mapper home hadoop mapper.py file home hadoop reducer.py reducer home hadoop reducer.py input my input output my output.. mapper home hadoop mapper.py file home hadoop reducer.py reducer home hadoop reducer.py input my input output my output Input.. mapper.py file home hadoop reducer.py reducer home hadoop reducer.py input my input output my output Input is any random sequence..
how to use “group” in pymongo to group similar rows? http://stackoverflow.com/questions/5010624/how-to-use-group-in-pymongo-to-group-similar-rows # initial 'function obj prev prev.list.push obj ' # reducer len result # will show three groups 3 int result 0 'uid' 1 result..
Streaming or custom Jar in Hadoop http://stackoverflow.com/questions/6873077/streaming-or-custom-jar-in-hadoop job in Hadoop on Amazon's EMR with the mapper and reducer written in Python. I want to know about the speed gains I would.. I would experience if I implement the same mapper and reducer in Java or use Pig . In particular I'm looking for people's.. here you are limited to the key and value s to your mapper reducer being a text string. You would need to expend some amount of..
Hadoop cluster - Do I need to replicate my code over all machines before running job? http://stackoverflow.com/questions/7892950/hadoop-cluster-do-i-need-to-replicate-my-code-over-all-machines-before-running myInputDirs output myOutputDir mapper myPythonScript.py reducer bin wc file myPythonScript.py file myDictionary.txt share..
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