mrjob_wikimedia_pageloads.py

#!/usr/bin/python
# Copyright 2009-2010 Yelp
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Wikimedia Article Counter in Hadoopy Goodness
"""
from mrjob.job import MRJob



class MRWikipediaRequests(MRJob):

    def mapper(self, _, line):
        # Split a line of the wp logs
        logparts = line.split(' ')

        langproj = logparts[0]
        pagename = logparts[1]
        counts = int(logparts[2])

        # Count number of pageviews per language too!
        #self.increment_counter('languages', langproj[0:2], counts)

        # Track the pageviews per page
        yield ((langproj,pagename), counts)

    def combiner(self, langproj_name, counts):
        yield (langproj_name, sum(counts))

    def reducer(self, langproj_name, counts):
        yield (langproj_name, sum(counts))


if __name__ == '__main__':
    MRWikipediaRequests.run()