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Storm: the Hadoop of Realtime Stream Processing
Gabriel Grant
March 25, 2012
Programming
3
1.3k
Storm: the Hadoop of Realtime Stream Processing
Twitter's new scalable, fault-tolerant, and simple(ish) stream programming system... with Python!
Gabriel Grant
March 25, 2012
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Transcript
STORM Keeping it Real(time) Since 2011
HELLO.
dotCloud.com
DATA
DATA
MEGA-DATA
VERSION ONE
VERSION TWO
VERSION TWO
VERSION THREE
JOY
VERSION FOUR?
ENTER, STORM
REAL-TIME COMPUTATION
DISTRIBUTED RPC & STREAM PROCESSING
HISTORY
STREAM PROCESSING
STORM:REAL-TIME HADOOP:BATCH
WOW
HIGH VOLUME
CONTINUOUS
CONTINUOUS
FAULT TOLERANT
DOESN'T
PERSIST
PROCESS BATCHES RELIABLY
PROTECT AGAINST HUMAN ERROR
PROTECT AGAINST HUMAN ERROR
THREE CORE ELEMENTS
SPOUTS
STREAMS
BOLTS
TOPOLOGIES
TASKS
TASKS
OUTPUT ROUTING?
STREAM GROUPINGS
SHUFFLE GROUPING
FIELDS GROUPING
ALL GROUPING
GLOBAL GROUPING
DOWN 'N DIRTY
GATEWAYS
GATEWAYS
REAL-TIME GEOCODE BUCKETED CLIENT UPDATE
THE TOPOLOGY
THE TOPOLOGY
CODE TIME: START ECLIPSE
WAIT, WHAT?!
MULTILANG API
I'VE GOT YOU COVERED
UMBRELLA: IT PROTECTS YOU FROM STORM
THE TOPOLOGY
I'VE GOT YOU COVERED class RedisSpout(JVMSpout): class Default(Stream): fields =
'message' jvm_class = 'yieldbot.storm.spout'
I'VE GOT YOU COVERED class LogParserBolt(AutoAckBolt): class Default(Stream): fields =
'ip_address' def execute(self, input): ip_address = parse_log(input.message) self.emit(ip_address)
I'VE GOT YOU COVERED class GeolocatorBolt(AutoAckBolt): class Default(Stream): fields =
'lat', 'long' def __init__(self, *args, **kwargs): self.geoip = pygeoip.GeoIP('GeoLiteCity.dat') super(GeolocatorBolt, self) \ .__init__(*args, **kwargs) def execute(self, input): record = self.geoip.record_by_addr(input.ip) lat = record['latitude'] long_ = record['longitude'] self.emit((lat, long_))
I'VE GOT YOU COVERED class WSPuserBolt(Bolt): def __init__(self, *args, **kwargs):
self.batcher = TimeBatcher() self.pusher = zerorpc.Client(timeout=None) url = os.environ['WSPUSHER_ZERORPC_URL'] self.wspusher.connect(url) super(WSPusherBolt, self).__init__(*args, **kwargs def execute(self, input): t = time() batch = self.pop_batch(t) if batch: self.wspusher.push_list(batch) data = input.lat, input.long self.batcher.push_item(t, data)
I'VE GOT YOU COVERED class GeocoderTopology(Topology): # components redis =
RedisSpout(1) parser = LogParserBolt(3) geolocator = GeolocatorBolt(2) pusher = WSPuserBolt(4) # plumbing parser.inputs.append(ShuffleGrouping(redis)) geolocator.inputs.append(ShuffleGrouping(parser)) pusher.inputs.append( FieldsGrouping(geolocator, 'lat', 'long'))
INSIDE THE MACHINE
THREE COMPONENTS
NIMBUS
ZOOKEEPER CLUSTER
WORKER NODES
DETAILS
DEPLOYMENT
EC2?
DOTCLOUD!
$ git clone \ https://github.com/gabrielgrant/storm-on-dotcloud.git $ dotcloud push mystorm storm-on-dotcloud
… $ dotcloud scale worker=3
TESTING
JAVA
CLOJURE
ANT MAVEN
LINEINGEN
SCALING
WHEN
HOW
THE FUTURE: EASY & AUTO
THANKS!
GABRIEL GRANT @gabrielmgrant gabrielgrant.ca