@@ -1,10 +1,40 @@ -= rx += Radoop -* FIX (url) == DESCRIPTION: -FIX (describe your package) +To use, you subclass Radoop like this: + +---- +require 'rubygems' +require 'radoop' + +class WordCount < Radoop + include_package "org.apache.hadoop.io" + + output_key_class Text + output_value_class IntWritable + + def map(k, v, output, reporter) + values = v.to_s.split(/\W+/) + values.each do |v| + output.collect(v.to_hadoop_text, 1.to_int_writable) + end + end +end +---- + +And then run the radoop command (here with --verbose turned on). No compiling, no building jars, it should just feel something like running a normal Ruby script. + +Options are things like: + +--radoop_file word_count.rb # The name of the file containing the Radoop subclass +--radoop_class WordCount # The name of the Radoop subclass +--output_path /tmp/j1 +--input_path /user/james/tmp/tale.txt,/user/james/tmp/tale1.txt -v + +Radoop handles zipping up your jruby install directory, your gem directories, and your ruby files, and puts them on the machines running tasks using the DistributedCache mechanism. + == FEATURES/PROBLEMS: README.txt 9fceb6b7bd05a59c0f142cdd8473c6b0cb720f0f James Moore james@madra.banshee.com http://github.com/banshee/radoop/commit/403a5d7159093f85eb64dac4d086b7cd65a8d2fa 403a5d7159093f85eb64dac4d086b7cd65a8d2fa 2008-09-10T18:24:26-07:00 2008-09-10T18:24:26-07:00 Added documentation to README 130dba9fe7de85aa440b0e977cd8a61a568ed3be James Moore james@madra.banshee.com