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Hadoop Streaming with Node.js
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#!/usr/bin/env node | |
var stdin = process.openStdin(); | |
var stdout = process.stdout; | |
var input = ''; | |
stdin.setEncoding('utf8'); | |
stdin.on('data', function(data) { | |
if (data) { | |
input += data; | |
while (input.match(/\r?\n/)) { | |
input = RegExp.rightContext; | |
proc(RegExp.leftContext); | |
} | |
} | |
}); | |
stdin.on('end', function() { | |
if (input) { | |
proc(input); | |
} | |
}); | |
function proc(line) { | |
var words = line.split(' '); | |
stdout.write(words[8] + ',1\n'); | |
} |
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#!/usr/bin/env ruby | |
ARGF.each do |line| | |
line.chomp! | |
words = line.split(' ') | |
printf("%s,1\n", words[8]) | |
end |
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#!/usr/bin/env node | |
var stdin = process.openStdin(); | |
var stdout = process.stdout; | |
var counter = {}; | |
var input = ''; | |
stdin.setEncoding('utf8'); | |
stdin.setEncoding('utf8'); | |
stdin.on('data', function(data) { | |
if (data) { | |
input += data; | |
while (input.match(/\r?\n/)) { | |
input = RegExp.rightContext; | |
proc(RegExp.leftContext); | |
} | |
} | |
}); | |
stdin.on('end', function() { | |
if (input) proc(input); | |
for (var k in counter) { | |
stdout.write(k + ':' + counter[k] + '\n'); | |
} | |
}); | |
function proc(line) { | |
var words = line.split(','); | |
var word = words[0]; | |
var count = parseInt(words[1]); | |
if (!counter[word]) counter[word] = 1; | |
else counter[word] += count; | |
} |
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#!/usr/bin/env ruby | |
counter = Hash.new | |
ARGF.each do |line| | |
line.chomp! | |
words = line.split(',') | |
word = words[0] | |
count = words[1].to_i | |
if !counter.key?(word) | |
counter[word] = 1 | |
else | |
counter[word]+=count | |
end | |
end | |
counter.each do |k, v| | |
printf("%s:%d\n", k, v) | |
end |
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