redstorm/examples/simple/word_count_topology.rb

36 lines
809 B
Ruby

require 'examples/simple/random_sentence_spout'
require 'examples/simple/split_sentence_bolt'
require 'examples/simple/word_count_bolt'
module RedStorm
class WordCountTopology < SimpleTopology
spout RandomSentenceSpout, :parallelism => 5
bolt SplitSentenceBolt, :parallelism => 8 do
source RandomSentenceSpout, :shuffle
end
bolt WordCountBolt, :parallelism => 12 do
source SplitSentenceBolt, :fields => ["word"]
end
configure :word_count do |env|
case env
when :local
debug true
max_task_parallelism 3
when :cluster
debug true
num_workers 20
max_spout_pending(1000);
end
end
on_submit do |env|
if env == :local
sleep(5)
cluster.shutdown
end
end
end
end