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From Danijel Schiavuzzi <dani...@schiavuzzi.com>
Subject Re: Kafka trident getting stuck
Date Thu, 10 Jul 2014 12:17:29 GMT
That's right, newStream() stream (spout) names in your topologies must be
unique cluster-wide (because they are included in the Zookeeper node path),
otherwise data corruption may occur as multiple Trident spouts access and
modify the same Zookeeper data.

The ConnectionException seems to be throws by the Kafka consumer in your
Kafka spout. Can you check your Kafka broker is up and running?


On Thu, Jul 10, 2014 at 1:23 PM, Miloš Solujić <milos.solujic@gmail.com>
wrote:

> Thanks Danijel for taking interest in my problem.
>
> Exactly same feeling I've got (that zookeeper data is corrupted) So I
> purged info about it via zkCli.sh
>
> Now I've got some lower level issues:
>
> 2014-07-10 11:00:13 b.s.d.worker [INFO] Worker
> 04a17a6b-5aea-47ce-808b-218c4bcc1d51 for storm
> tridentOpaqueTest-topology-3-1404989752 on
> e4cdd619-c7e4-40f0-941e-352ac41daf6e:6701 has finished loading
> 2014-07-10 11:00:14 s.k.DynamicBrokersReader [INFO] Read partition info
> from zookeeper: GlobalPartitionInformation{partitionMap={0=localhost:9092}}
> 2014-07-10 11:00:14 o.a.c.f.i.CuratorFrameworkImpl [INFO] Starting
> 2014-07-10 11:00:14 o.a.z.ZooKeeper [INFO] Initiating client connection,
> connectString=zookeeper1:2181 sessionTimeout=20000
> watcher=org.apache.curator.ConnectionState@203c6f3e
> 2014-07-10 11:00:14 o.a.z.ClientCnxn [INFO] Opening socket connection to
> server zookeeper1/10.0.0.241:2181. Will not attempt to authenticate using
> SASL (unknown error)
> 2014-07-10 11:00:14 o.a.z.ClientCnxn [INFO] Socket connection established
> to zookeeper1/10.0.0.241:2181, initiating session
> 2014-07-10 11:00:14 o.a.z.ClientCnxn [INFO] Session establishment complete
> on server zookeeper1/10.0.0.241:2181, sessionid = 0x1471fbc929c00f4,
> negotiated timeout = 20000
> 2014-07-10 11:00:14 o.a.c.f.s.ConnectionStateManager [INFO] State change:
> CONNECTED
> 2014-07-10 11:00:14 o.a.c.f.s.ConnectionStateManager [WARN] There are no
> ConnectionStateListeners registered.
> 2014-07-10 11:00:15 o.a.z.ZooKeeper [INFO] Session: 0x1471fbc929c00f4
> closed
> 2014-07-10 11:00:15 o.a.c.f.i.CuratorFrameworkImpl [INFO] Starting
> 2014-07-10 11:00:15 o.a.z.ClientCnxn [INFO] EventThread shut down
> 2014-07-10 11:00:15 o.a.z.ZooKeeper [INFO] Initiating client connection,
> connectString=zookeeper1:2181/transactional/tridentTestOpaqueSpout/user
> sessionTimeout=20000 watcher=org.apache.curator.ConnectionState@4fa
> 983e
> 2014-07-10 11:00:15 o.a.z.ClientCnxn [INFO] Opening socket connection to
> server zookeeper1/10.0.0.241:2181. Will not attempt to authenticate using
> SASL (unknown error)
> 2014-07-10 11:00:15 o.a.z.ClientCnxn [INFO] Socket connection established
> to zookeeper1/10.0.0.241:2181, initiating session
> 2014-07-10 11:00:15 b.s.d.executor [INFO] Prepared bolt spout0:(5)
> 2014-07-10 11:00:15 o.a.z.ClientCnxn [INFO] Session establishment complete
> on server zookeeper1/10.0.0.241:2181, sessionid = 0x1471fbc929c00f5,
> negotiated timeout = 20000
> 2014-07-10 11:00:15 o.a.c.f.s.ConnectionStateManager [INFO] State change:
> CONNECTED
> 2014-07-10 11:00:15 o.a.c.f.s.ConnectionStateManager [WARN] There are no
> ConnectionStateListeners registered.
> 2014-07-10 11:00:16 b.s.util [ERROR] Async loop died!
> java.lang.RuntimeException: java.net.ConnectException: Connection refused
>         at
> backtype.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.java:128)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at
> backtype.storm.utils.DisruptorQueue.consumeBatchWhenAvailable(DisruptorQueue.java:99)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at
> backtype.storm.disruptor$consume_batch_when_available.invoke(disruptor.clj:80)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at
> backtype.storm.daemon.executor$fn__5641$fn__5653$fn__5700.invoke(executor.clj:746)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at backtype.storm.util$async_loop$fn__457.invoke(util.clj:431)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at clojure.lang.AFn.run(AFn.java:24) ~[clojure-1.5.1.jar:na]
>         at java.lang.Thread.run(Thread.java:701) ~[na:1.6.0_30]
> Caused by: java.net.ConnectException: Connection refused
>         at sun.nio.ch.Net.connect(Native Method) ~[na:1.6.0_30]
>         at
> sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:534)
> ~[na:1.6.0_30]
>         at kafka.network.BlockingChannel.connect(BlockingChannel.scala:57)
> ~[stormjar.jar:na]
>         at kafka.consumer.SimpleConsumer.connect(SimpleConsumer.scala:44)
> ~[stormjar.jar:na]
>         at
> kafka.consumer.SimpleConsumer.getOrMakeConnection(SimpleConsumer.scala:142)
> ~[stormjar.jar:na]
>         at
> kafka.consumer.SimpleConsumer.kafka$consumer$SimpleConsumer$$sendRequest(SimpleConsumer.scala:69)
> ~[stormjar.jar:na]
>         at
> kafka.consumer.SimpleConsumer.getOffsetsBefore(SimpleConsumer.scala:124)
> ~[stormjar.jar:na]
>         at
> kafka.javaapi.consumer.SimpleConsumer.getOffsetsBefore(SimpleConsumer.scala:79)
> ~[stormjar.jar:na]
>         at storm.kafka.KafkaUtils.getOffset(KafkaUtils.java:77)
> ~[stormjar.jar:na]
>         at storm.kafka.KafkaUtils.getOffset(KafkaUtils.java:67)
> ~[stormjar.jar:na]
>         at
> storm.kafka.trident.TridentKafkaEmitter.doEmitNewPartitionBatch(TridentKafkaEmitter.java:111)
> ~[stormjar.jar:na]
>         at
> storm.kafka.trident.TridentKafkaEmitter.failFastEmitNewPartitionBatch(TridentKafkaEmitter.java:72)
> ~[stormjar.jar:na]
>         at
> storm.kafka.trident.TridentKafkaEmitter.emitNewPartitionBatch(TridentKafkaEmitter.java:79)
> ~[stormjar.jar:na]
>         at
> storm.kafka.trident.TridentKafkaEmitter.access$000(TridentKafkaEmitter.java:46)
> ~[stormjar.jar:na]
>         at
> storm.kafka.trident.TridentKafkaEmitter$1.emitPartitionBatch(TridentKafkaEmitter.java:204)
> ~[stormjar.jar:na]
>         at
> storm.kafka.trident.TridentKafkaEmitter$1.emitPartitionBatch(TridentKafkaEmitter.java:194)
> ~[stormjar.jar:na]
>         at
> storm.trident.spout.OpaquePartitionedTridentSpoutExecutor$Emitter.emitBatch(OpaquePartitionedTridentSpoutExecutor.java:127)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at
> storm.trident.spout.TridentSpoutExecutor.execute(TridentSpoutExecutor.java:82)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at
> storm.trident.topology.TridentBoltExecutor.execute(TridentBoltExecutor.java:369)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at
> backtype.storm.daemon.executor$fn__5641$tuple_action_fn__5643.invoke(executor.clj:631)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at
> backtype.storm.daemon.executor$mk_task_receiver$fn__5564.invoke(executor.clj:399)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at
> backtype.storm.disruptor$clojure_handler$reify__745.onEvent(disruptor.clj:58)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         at
> backtype.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.java:120)
> ~[storm-core-0.9.2-incubating.jar:0.9.2-incubating]
>         ... 6 common frames omitted
> 2014-07-10 11:00:16 b.s.d.executor [ERROR]
>
> I've specified in simple test topology that I want only one worker, so
> what happens after this error, supervisor will boot up another woorker,
> which fails with same error after ~ minute of running.
>
> What is this about and how to fix this problem? (setup is the same,
> default wirbelsturm cluster running on ubuntu 64b machine)
>
> btw, here is new test topology, using opaque kafka spout (same thing
> happens with transactional too)
>
>
> public class TridentKafkaOpaqueDeployer {
>
>     public static class PrinterBolt extends BaseFunction {
>         private static final long serialVersionUID = -5585127152942983256L;
>
>         @Override
>         public void execute(TridentTuple tuple, TridentCollector
> tridentCollector) {
>             System.out.println(tuple.toString());
>         }
>     }
>
>     public static void main(String[] args) throws Exception {
>
>         BrokerHosts brokerHosts = new ZkHosts("zookeeper1");
>         TridentKafkaConfig kafkaConfig = new
> TridentKafkaConfig(brokerHosts, "tridentOpaqueTest");
>
>         kafkaConfig.scheme = new SchemeAsMultiScheme(new StringScheme());
> //        kafkaConfig.forceFromStart = true;
>
>         TridentTopology topology = new TridentTopology();
>
>         topology
>             .newStream("tridentTestOpaqueSpout", new
> OpaqueTridentKafkaSpout(kafkaConfig))
>                     .name("tridentTestOpaqueSpout")
>             .each(new Fields("str"), new PrinterBolt(),
>                     new Fields("print"));
>
>         Config config = new Config();
>         config.put(Config.TOPOLOGY_TRIDENT_BATCH_EMIT_INTERVAL_MILLIS,
> 2000);
>         config.setNumWorkers(1);
>         config.setMaxSpoutPending(3);
>
>         StormSubmitter.submitTopologyWithProgressBar(args[0], config,
> topology.build());
>     }
> }
>
>
> // note
>
> I also resolved issue with reusing spout name across topologies, as per
> recommendation that Nathan gave some time ago
> https://groups.google.com/forum/#!topic/storm-user/Tn43K1eGcKY
>
>
>
>
> On Wed, Jul 9, 2014 at 9:49 PM, Danijel Schiavuzzi <danijel@schiavuzzi.com
> > wrote:
>
>> Very strange. Could you try deleting Trident's data in Zookeeper:
>>
>> $ sh zkCli.sh
>> rmr /transactional
>>
>> and then resubmitting the topology and repeating your test scenario?
>>
>> Maybe the the spout's data in Zookeeper got somehow corrupted because you
>> are setting forceFromStart in the spout, and resubmitting the topology
>> multiple times. I think the transactional topology may be left in an
>> undefined state that case.
>>
>> You could also enable the LoggingMetricsConsumer in storm.yaml, and then
>> check the Kafka spout's kafka.latestOffset metric in metrics.log, and
>> compare this offset with the one Kafka's own utility script outputs
>> (search under kafka/bin/ for the script).
>>
>> On Wednesday, July 9, 2014, Miloš Solujić <milos.solujic@gmail.com>
>> wrote:
>>
>>> Yep, I did double checked.
>>>
>>> Here is how it's done:
>>>
>>> #create topic
>>> /opt/kafka/bin/kafka-topics.sh --create --zookeeper zookeeper1:2181
>>> --replication-factor 1 --partition 1 --topic scores
>>>
>>> #check what is created
>>> /opt/kafka/bin/kafka-topics.sh --zookeeper zookeeper1:2181 --describe
>>> --topic scores
>>>
>>> #produce few messages
>>> /opt/kafka/bin/kafka-console-producer.sh --broker-list localhost:9092
>>> --topic scores
>>>
>>> #consumer
>>> /opt/kafka/bin/kafka-console-consumer.sh --zookeeper zookeeper1:2181
>>> --topic scores --from-beginning
>>>
>>>
>>>
>>>
>>> > try enabling Config.setDebug(true) and monitoring the Kafka spout's
>>> activity in the logs.
>>> did that, only tick touples are shipped around, nothing else
>>>
>>> > Also, you should paste all your worker logs (worker-*.log files).
>>> Forgot to mention, only one worker is set, exactly for reason to
>>> simplify things.
>>>
>>>
>>>
>>> Here is simplified version of this topology (no trident state, only
>>> simple printer bolt)
>>>
>>>
>>> public class TridentKafkaDeployer {
>>>
>>>     public static class PrinterBolt extends BaseFunction {
>>>         private static final long serialVersionUID =
>>> -5585127152942983256L;
>>>
>>>         @Override
>>>         public void execute(TridentTuple tuple, TridentCollector
>>> tridentCollector) {
>>>             System.out.println(tuple.toString());
>>>         }
>>>     }
>>>
>>>     public static void main(String[] args) throws Exception {
>>>
>>>         BrokerHosts zk = new ZkHosts("zookeeper1");
>>>         TridentKafkaConfig kafkaConfig = new TridentKafkaConfig(zk,
>>> "scores");
>>>
>>>         kafkaConfig.scheme = new SchemeAsMultiScheme(new StringScheme());
>>>         kafkaConfig.forceFromStart = true;
>>>
>>>         TridentTopology topology = new TridentTopology();
>>>
>>>         topology
>>>             .newStream("raw-scores", new
>>> TransactionalTridentKafkaSpout(kafkaConfig))
>>>                     .name("kafkaSpout")
>>>             .each(new Fields("str"), new PrinterBolt(),
>>>                     new Fields("print"));
>>>
>>>
>>>         Config config = new Config();
>>>         config.put(Config.TOPOLOGY_TRIDENT_BATCH_EMIT_INTERVAL_MILLIS,
>>> 2000);
>>>         config.setNumWorkers(1);
>>>         config.setMaxSpoutPending(3);
>>>
>>>         StormSubmitter.submitTopologyWithProgressBar(args[0], config,
>>> topology.build());
>>>     }
>>> }
>>>
>>> Exactly same behaviour (it goes to exactly same kafka topic) = no
>>> picking up fresh messages in kafka topic.
>>>
>>>
>>>
>>>
>>>
>>> On Tue, Jul 8, 2014 at 7:08 PM, Danijel Schiavuzzi <
>>> danijel@schiavuzzi.com> wrote:
>>>
>>>> Also, you should paste all your worker logs (worker-*.log files).
>>>>
>>>>
>>>> On Tuesday, July 8, 2014, Danijel Schiavuzzi <danijel@schiavuzzi.com>
>>>> wrote:
>>>>
>>>>> I'd double check the Kafka producer to make sure those messages are
>>>>> really getting into the right Kafka topic. Also,
>>>>> try enabling Config.setDebug(true) and monitoring the Kafka spout's
>>>>> activity in the logs. setMaxSpoutPending should always be set, as by
>>>>> default it is unset, so you risk internal queue explosion.
>>>>>
>>>>> On Tuesday, July 8, 2014, Miloš Solujić <milos.solujic@gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Yep. pretty much sure. Via internal kafka-producer.sh
>>>>>> same method is used to produce initial messages (before first launch
>>>>>> of topology, that got consumed and processed just fine)
>>>>>>
>>>>>>  as for maxSpoutPending first I tried with 10, than removed it (left
>>>>>> default value)
>>>>>>
>>>>>>
>>>>>> On Tue, Jul 8, 2014 at 6:31 PM, Danijel Schiavuzzi <
>>>>>> danijel@schiavuzzi.com> wrote:
>>>>>>
>>>>>>> Are you sure you are producing new messages into the same Kafka
>>>>>>> topic? What number did you set maxSpoutPending to?
>>>>>>>
>>>>>>> On Tuesday, July 8, 2014, Miloš Solujić <milos.solujic@gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Thanks Danijel for your quick proposition.
>>>>>>>>
>>>>>>>> I tried lowering down and removing all performance settings
(those
>>>>>>>> were left from load testing on one machine)
>>>>>>>>
>>>>>>>> Still same result: no matter what, new messages are not taken
from
>>>>>>>> kafka after topology is redeployed.
>>>>>>>>
>>>>>>>>
>>>>>>>> On Tue, Jul 8, 2014 at 6:15 PM, Danijel Schiavuzzi <
>>>>>>>> danijel@schiavuzzi.com> wrote:
>>>>>>>>
>>>>>>>>> Try lowering setMaxSpoutPending(100000) to a much lower
value
>>>>>>>>> (like 10). In Trident, setMaxSpoutPending referns to
the number of batches,
>>>>>>>>> not tuples like in plain Storm. Too high values may cause
blockages like
>>>>>>>>> the one you describe.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Tuesday, July 8, 2014, Miloš Solujić <milos.solujic@gmail.com>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Hi all,
>>>>>>>>>>
>>>>>>>>>> I'm pretty new to storm and kafka/zookeeper, and
I hope that my
>>>>>>>>>> question is not to dumb. Here it goes:
>>>>>>>>>>
>>>>>>>>>> I'm using latest stable storm and storm-kafka = 0.9.2-incubating
>>>>>>>>>>
>>>>>>>>>> I've setup test cluster using wirbelsturm tool with
unchanged
>>>>>>>>>> yaml (just uncommented kafka machine)
>>>>>>>>>>
>>>>>>>>>> here is config snippet for my trident topology:
>>>>>>>>>>
>>>>>>>>>>         BrokerHosts zk = new ZkHosts("zookeeper1");
>>>>>>>>>>         TridentKafkaConfig kafkaConf = new TridentKafkaConfig(zk,
>>>>>>>>>> "scores");
>>>>>>>>>>
>>>>>>>>>>         kafkaConf.scheme = new SchemeAsMultiScheme(new
>>>>>>>>>> StringScheme());
>>>>>>>>>>         kafkaConf.fetchSizeBytes = 10000;
>>>>>>>>>>         kafkaConf.forceFromStart = true;
>>>>>>>>>>
>>>>>>>>>>         Config stormConfig = new Config();
>>>>>>>>>>         stormConfig.put(Config.NIMBUS_HOST, NIMBUS_IP);
>>>>>>>>>>         stormConfig.put("couchbase.ip", COUCHBASE_CONSOLE);
>>>>>>>>>>         stormConfig.put("couchbase.bucket", COUCHBASE_BUCKET);
>>>>>>>>>>         stormConfig.put("couchbase.password", COUCHBASE_PASSWORD);
>>>>>>>>>>         // performance settings
>>>>>>>>>>
>>>>>>>>>> stormConfig.put(Config.TOPOLOGY_TRIDENT_BATCH_EMIT_INTERVAL_MILLIS,
100);
>>>>>>>>>>
>>>>>>>>>> stormConfig.put(RichSpoutBatchExecutor.MAX_BATCH_SIZE_CONF,
100);
>>>>>>>>>>         stormConfig.setMaxSpoutPending(100000);
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>         if (args != null && args.length >
0) {
>>>>>>>>>>
>>>>>>>>>>             StormSubmitter.submitTopologyWithProgressBar(args[0],
>>>>>>>>>> stormConfig,
>>>>>>>>>>                     BuildTridentScoreTopology.build(kafkaConf));
>>>>>>>>>>         } else {...}
>>>>>>>>>>
>>>>>>>>>> Now, I've created 'scores' topic in kafka and pushed
few test
>>>>>>>>>> messages prior to starting topology, with kafkaConf.forceFromStart
= true.
>>>>>>>>>> And topology processed those messages just fine,
and stored them in
>>>>>>>>>> tridentState (couhbase)
>>>>>>>>>>
>>>>>>>>>> All new messages are simply ignored!
>>>>>>>>>>
>>>>>>>>>> After redeploying topology (both with forceFromStart
= true and
>>>>>>>>>> forceFromStart = false) no more messages are ingested
from kafka.
>>>>>>>>>>
>>>>>>>>>> here is worker log for one topology deployment and
short run
>>>>>>>>>> http://pastie.org/private/4xsk6pijvmulwrcg7zgca
>>>>>>>>>>
>>>>>>>>>> those are VMs that host this storm cluster
>>>>>>>>>> 10.0.0.241 zookeeper1
>>>>>>>>>> 10.0.0.101 supervisor1
>>>>>>>>>> 10.0.0.21 kafka1
>>>>>>>>>> 10.0.0.251 nimbus1
>>>>>>>>>>
>>>>>>>>>> Thanks,
>>>>>>>>>> Milos
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Danijel Schiavuzzi
>>>>>>>>>
>>>>>>>>> E: danijel@schiavuzzi.com
>>>>>>>>> W: www.schiavuzzi.com
>>>>>>>>> T: +385989035562
>>>>>>>>> Skype: danijels7
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Danijel Schiavuzzi
>>>>>>>
>>>>>>> E: danijel@schiavuzzi.com
>>>>>>> W: www.schiavuzzi.com
>>>>>>> T: +385989035562
>>>>>>> Skype: danijels7
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>> --
>>>>> Danijel Schiavuzzi
>>>>>
>>>>> E: danijel@schiavuzzi.com
>>>>> W: www.schiavuzzi.com
>>>>> T: +385989035562
>>>>> Skype: danijels7
>>>>>
>>>>
>>>>
>>>> --
>>>> Danijel Schiavuzzi
>>>>
>>>> E: danijel@schiavuzzi.com
>>>> W: www.schiavuzzi.com
>>>> T: +385989035562
>>>> Skype: danijels7
>>>>
>>>
>>>
>>
>> --
>> Danijel Schiavuzzi
>>
>> E: danijel@schiavuzzi.com
>> W: www.schiavuzzi.com
>> T: +385989035562
>> Skype: danijels7
>>
>
>


-- 
Danijel Schiavuzzi

E: danijel@schiavuzzi.com
W: www.schiavuzzi.com
T: +385989035562
Skype: danijels7

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