Since you're producing String data to 'myTopic', can you try setting the
string serialization in your config ?
serializers.registry.string.class=org.apache.samza.serializers.StringSerdeFactory
systems.kafka.streams.myTopic.samza.msg.serde=string
On Mon, Mar 23, 2015 at 9:17 PM, Ash W Matheson <ash.mathe...@gmail.com>
wrote:
> more info - new exception message:
>
> Exception in thread "main"
> org.apache.samza.system.SystemConsumersException: Cannot deserialize an
> incoming message.
>
> Updated the diff in pastebin with the changes.
>
> On Mon, Mar 23, 2015 at 8:41 PM, Ash W Matheson <ash.mathe...@gmail.com>
> wrote:
>
> > Gah! Yeah, those were gone several revisions ago but didn't get nuked in
> > the last iteration.
> >
> > OK, let me do a quick test to see if that was my problem all along.
> >
> > On Mon, Mar 23, 2015 at 8:38 PM, Navina Ramesh <
> > nram...@linkedin.com.invalid> wrote:
> >
> >> Hey Ash,
> >> I was referring to the lines before the try block.
> >>
> >> Map<String, Object> jsonObject = (Map<String, Object>)
> >> envelope.getMessage();
> >> WikipediaFeedEvent event = new WikipediaFeedEvent(jsonObject);
> >>
> >> try {
> >> System.out.println("[DWH] should see this");
> >> System.out.println(event.getRawEvent());
> >> …
> >>
> >>
> >> Did you remove those lines as well?
> >>
> >> Navina
> >>
> >> On 3/23/15, 8:31 PM, "Ash W Matheson" <ash.mathe...@gmail.com> wrote:
> >>
> >> >Just looking at the diff I posted and it's:
> >> >
> >> >
> >> > 1. try {
> >> > 2. - Map<String, Object> parsedJsonObject =
> >> >parse(event.getRawEvent(
> >> > ));
> >> > 3. + System.out.println("[DWH] should see this");
> >> > 4. + System.out.println(event.getRawEvent());
> >> > 5. + // Map<String, Object> parsedJsonObject = parse(
> >> > event.getRawEvent());
> >> >
> >> >
> >> >I've removed the Map and added two System.out.println calls. So no,
> >> there
> >> >shouldn't be any reference to
> >> >Map<String, Object> parsedJsonObject = parse(event.getRawEvent());
> >> >in the source java file.
> >> >
> >> >
> >> >On Mon, Mar 23, 2015 at 7:42 PM, Ash W Matheson <
> ash.mathe...@gmail.com>
> >> >wrote:
> >> >
> >> >> I'm in transit right now but if memory serves me everything should be
> >> >> commented out of that method except for the System.out.println call.
> >> >>I'll
> >> >> be home shortly and can confirm.
> >> >> On Mar 23, 2015 7:28 PM, "Navina Ramesh"
> <nram...@linkedin.com.invalid
> >> >
> >> >> wrote:
> >> >>
> >> >>> Hi Ash,
> >> >>> I just ran wikipedia-parser with your patch. Looks like you have set
> >> >>>the
> >> >>> message serde correctly in the configs. However, the original code
> >> >>>still
> >> >>> converts it into a Map for consumption in the WikipediaFeedEvent.
> >> >>> I am seeing the following (expected):
> >> >>>
> >> >>> 2015-03-23 19:17:49 SamzaContainerExceptionHandler [ERROR] Uncaught
> >> >>> exception in thread (name=main). Exiting process now.
> >> >>> java.lang.ClassCastException: java.lang.String cannot be cast to
> >> >>> java.util.Map
> >> >>> at
> >> >>>
> >> >>>
> >>
> >>
> >>>samza.examples.wikipedia.task.WikipediaParserStreamTask.process(Wikipedi
> >> >>>aPa
> >> >>> rserStreamTask.java:38)
> >> >>> at
> >> >>>
> >> >>>
> >>
> >>
> >>>org.apache.samza.container.TaskInstance$$anonfun$process$1.apply$mcV$sp(
> >> >>>Tas
> >> >>> kInstance.scala:133)
> >> >>>
> >> >>> Did you make the changes to fix this error? Your patch doesn¹t seem
> to
> >> >>> have that.
> >> >>> Line 38 Map<String, Object> jsonObject = (Map<String, Object>)
> >> >>> envelope.getMessage();
> >> >>>
> >> >>>
> >> >>>
> >> >>> Lmk so I can investigate further.
> >> >>>
> >> >>> Cheers!
> >> >>> Navina
> >> >>>
> >> >>> On 3/23/15, 6:43 PM, "Ash W Matheson" <ash.mathe...@gmail.com>
> wrote:
> >> >>>
> >> >>> >If anyone's interested, I've posted a diff of the project here:
> >> >>> >http://pastebin.com/6ZW6Y1Vu
> >> >>> >and the python publisher here: http://pastebin.com/2NvTFDFx
> >> >>> >
> >> >>> >if you want to take a stab at it.
> >> >>> >
> >> >>> >On Mon, Mar 23, 2015 at 6:04 PM, Ash W Matheson
> >> >>><ash.mathe...@gmail.com>
> >> >>> >wrote:
> >> >>> >
> >> >>> >> Ok, so very simple test, all running on a local machine, not
> across
> >> >>> >> networks and all in the hello-samza repo this time around.
> >> >>> >>
> >> >>> >> I've got the datapusher.py file set up to push data into
> localhost.
> >> >>>One
> >> >>> >> event per second.
> >> >>> >> And a modified hello-samza where I've modified the
> >> >>> >> WikipediaParserStreamTask.java class to simply read what's there.
> >> >>> >>
> >> >>> >> Running them both now and I'm seeing in the stderr files
> >> >>> >>
> (deploy/yarn/logs/userlogs/application_XXXXX/container_YYYY/stderr)
> >> >>>the
> >> >>> >> following:
> >> >>> >>
> >> >>> >> Exception in thread "main"
> >> >>> >> org.apache.samza.system.SystemConsumersException: Cannot
> >> >>>deserialize an
> >> >>> >> incoming message.
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.system.SystemConsumers.update(SystemConsumers.scala:2
> >> >>>>>93)
> >> >>> >> at org.apache.samza.system.SystemConsumers.org
> >> >>> >>
> >> >>>$apache$samza$system$SystemConsumers$$poll(SystemConsumers.scala:260)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.system.SystemConsumers$$anonfun$refresh$2.apply(Syste
> >> >>>>>mCo
> >> >>> >>nsumers.scala:276)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.system.SystemConsumers$$anonfun$refresh$2.apply(Syste
> >> >>>>>mCo
> >> >>> >>nsumers.scala:276)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.
> >> >>>>>sca
> >> >>> >>la:244)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.
> >> >>>>>sca
> >> >>> >>la:244)
> >> >>> >> at
> scala.collection.Iterator$class.foreach(Iterator.scala:727)
> >> >>> >> at
> >> >>>scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
> >> >>> >> at
> >> >>> scala.collection.MapLike$DefaultKeySet.foreach(MapLike.scala:174)
> >> >>> >> at
> >> >>> >>
> >> >>>scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>scala.collection.AbstractSet.scala$collection$SetLike$$super$map(Set.s
> >> >>>>>cal
> >> >>> >>a:47)
> >> >>> >> at scala.collection.SetLike$class.map(SetLike.scala:93)
> >> >>> >> at scala.collection.AbstractSet.map(Set.scala:47)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.system.SystemConsumers.refresh(SystemConsumers.scala:
> >> >>>>>276
> >> >>> >>)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.system.SystemConsumers.choose(SystemConsumers.scala:2
> >> >>>>>13)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.container.RunLoop$$anonfun$process$2$$anonfun$2.apply
> >> >>>>>(Ru
> >> >>> >>nLoop.scala:81)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.container.RunLoop$$anonfun$process$2$$anonfun$2.apply
> >> >>>>>(Ru
> >> >>> >>nLoop.scala:81)
> >> >>> >> at
> >> >>> >>
> >>
> >>>org.apache.samza.util.TimerUtils$class.updateTimer(TimerUtils.scala:37)
> >> >>> >> at
> >> >>>org.apache.samza.container.RunLoop.updateTimer(RunLoop.scala:36)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.container.RunLoop$$anonfun$process$2.apply(RunLoop.sc
> >> >>>>>ala
> >> >>> >>:80)
> >> >>> >> at
> >> >>> >>
> >>
> >>>org.apache.samza.util.TimerUtils$class.updateTimer(TimerUtils.scala:37)
> >> >>> >> at
> >> >>>org.apache.samza.container.RunLoop.updateTimer(RunLoop.scala:36)
> >> >>> >> at
> org.apache.samza.container.RunLoop.process(RunLoop.scala:79)
> >> >>> >> at org.apache.samza.container.RunLoop.run(RunLoop.scala:65)
> >> >>> >> at
> >> >>> >>
> >>
> >>>org.apache.samza.container.SamzaContainer.run(SamzaContainer.scala:556)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.container.SamzaContainer$.safeMain(SamzaContainer.sca
> >> >>>>>la:
> >> >>> >>108)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >>
> >>
> >>>org.apache.samza.container.SamzaContainer$.main(SamzaContainer.scala:87)
> >> >>> >> at
> >> >>>
> >>org.apache.samza.container.SamzaContainer.main(SamzaContainer.scala)
> >> >>> >> Caused by: org.codehaus.jackson.JsonParseException: Unexpected
> >> >>> character
> >> >>> >> ('M' (code 77)): expected a valid value (number, String, array,
> >> >>>object,
> >> >>> >> 'true', 'false' or 'null')
> >> >>> >> at [Source: [B@5454d285; line: 1, column: 2]
> >> >>> >> at
> >> >>> >>
> >> >>>org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1291)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParse
> >> >>>>>rMi
> >> >>> >>nimalBase.java:385)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.codehaus.jackson.impl.JsonParserMinimalBase._reportUnexpectedChar(
> >> >>>>>Jso
> >> >>> >>nParserMinimalBase.java:306)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.codehaus.jackson.impl.Utf8StreamParser._handleUnexpectedValue(Utf8
> >> >>>>>Str
> >> >>> >>eamParser.java:1581)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.codehaus.jackson.impl.Utf8StreamParser._nextTokenNotInObject(Utf8S
> >> >>>>>tre
> >> >>> >>amParser.java:436)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.codehaus.jackson.impl.Utf8StreamParser.nextToken(Utf8StreamParser.
> >> >>>>>jav
> >> >>> >>a:322)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.jav
> >> >>>>>a:2
> >> >>> >>432)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.ja
> >> >>>>>va:
> >> >>> >>2389)
> >> >>> >> at
> >> >>> >>
> >>
> >>>org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1667)
> >> >>> >> at
> >> >>>
> >>org.apache.samza.serializers.JsonSerde.fromBytes(JsonSerde.scala:33)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.serializers.SerdeManager.fromBytes(SerdeManager.scala
> >> >>>>>:11
> >> >>> >>5)
> >> >>> >> at
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>org.apache.samza.system.SystemConsumers.update(SystemConsumers.scala:2
> >> >>>>>90)
> >> >>> >>
> >> >>> >>
> >> >>> >> I changed the systems.kafka.samza.msg.serde=json to 'string' a
> >> while
> >> >>> >>back,
> >> >>> >> but that caused a separate exception. However that was many,
> MANY
> >> >>> >>attempts
> >> >>> >> ago.
> >> >>> >>
> >> >>> >> On Mon, Mar 23, 2015 at 5:23 PM, Ash W Matheson <
> >> >>> ash.mathe...@gmail.com>
> >> >>> >> wrote:
> >> >>> >>
> >> >>> >>> Ahh, I was going to add it to the run-class.sh script.
> >> >>> >>>
> >> >>> >>> Yeah, it's already there by default:
> >> >>> >>>
> >> >>> >>>
> >> >>> >>> # Metrics
> >> >>> >>> metrics.reporters=snapshot,jmx
> >> >>> >>>
> >> >>> >>>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>>metrics.reporter.snapshot.class=org.apache.samza.metrics.reporter.Met
> >> >>>>>>ric
> >> >>> >>>sSnapshotReporterFactory
> >> >>> >>> metrics.reporter.snapshot.stream=kafka.metrics
> >> >>> >>>
> >> >>> >>>
> >> >>>
> >> >>>
> >>
> >>
> >>>>>>metrics.reporter.jmx.class=org.apache.samza.metrics.reporter.JmxRepor
> >> >>>>>>ter
> >> >>> >>>Factory
> >> >>> >>>
> >> >>> >>> So, where would I see those metrics?
> >> >>> >>>
> >> >>> >>> On Mon, Mar 23, 2015 at 5:15 PM, Ash W Matheson
> >> >>> >>><ash.mathe...@gmail.com>
> >> >>> >>> wrote:
> >> >>> >>>
> >> >>> >>>> read: I'm a C++ programmer looking at Java for the first time
> in
> >> >>>> 10
> >> >>> >>>> years
> >> >>> >>>>
> >> >>> >>>> On Mon, Mar 23, 2015 at 5:13 PM, Ash W Matheson
> >> >>> >>>><ash.mathe...@gmail.com>
> >> >>> >>>> wrote:
> >> >>> >>>>
> >> >>> >>>>> I'm assuming I have Jmx defined ... where would that get set?
> >> >>> >>>>>
> >> >>> >>>>> On Mon, Mar 23, 2015 at 5:08 PM, Chinmay Soman <
> >> >>> >>>>> chinmay.cere...@gmail.com> wrote:
> >> >>> >>>>>
> >> >>> >>>>>> Hey Ash,
> >> >>> >>>>>>
> >> >>> >>>>>> Can you see your job metrics (if you have the Jmx metrics
> >> >>>defined)
> >> >>> >>>>>>to
> >> >>> >>>>>> see
> >> >>> >>>>>> if your job is actually doing anything ? My only guess at
> this
> >> >>> point
> >> >>> >>>>>> is the
> >> >>> >>>>>> process method is not being called because somehow there's no
> >> >>> >>>>>>incoming
> >> >>> >>>>>> data. I could be totally wrong of course.
> >> >>> >>>>>>
> >> >>> >>>>>> On Mon, Mar 23, 2015 at 4:28 PM, Ash W Matheson <
> >> >>> >>>>>> ash.mathe...@gmail.com>
> >> >>> >>>>>> wrote:
> >> >>> >>>>>>
> >> >>> >>>>>> > Just to be clear, here's what's changed from the default
> >> >>> >>>>>>hello-samza
> >> >>> >>>>>> repo:
> >> >>> >>>>>> >
> >> >>> >>>>>> > wikipedia-parser.properties==========================
> >> >>> >>>>>> > task.inputs=kafka.myTopic
> >> >>> >>>>>> > systems.kafka.consumer.zookeeper.connect=
> >> >>> >>>>>> > ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com:2181/
> >> >>> >>>>>> > systems.kafka.consumer.auto.offset.reset=smallest
> >> >>> >>>>>> >
> >> >>> >>>>>> > WikipediaParserStreamTask.java =====================
> >> >>> >>>>>> > public void process(IncomingMessageEnvelope envelope,
> >> >>> >>>>>> MessageCollector
> >> >>> >>>>>> > collector, TaskCoordinator coordinator) {
> >> >>> >>>>>> > Map<String, Object> jsonObject = (Map<String, Object>)
> >> >>> >>>>>> > envelope.getMessage();
> >> >>> >>>>>> > WikipediaFeedEvent event = new
> >> >>> WikipediaFeedEvent(jsonObject);
> >> >>> >>>>>> >
> >> >>> >>>>>> > try {
> >> >>> >>>>>> > System.out.println(event.getRawEvent());
> >> >>> >>>>>> > // Map<String, Object> parsedJsonObject =
> >> >>> >>>>>> parse(event.getRawEvent());
> >> >>> >>>>>> >
> >> >>> >>>>>> > // parsedJsonObject.put("channel",
> event.getChannel());
> >> >>> >>>>>> > // parsedJsonObject.put("source", event.getSource());
> >> >>> >>>>>> > // parsedJsonObject.put("time", event.getTime());
> >> >>> >>>>>> >
> >> >>> >>>>>> > // collector.send(new OutgoingMessageEnvelope(new
> >> >>> >>>>>> > SystemStream("kafka", "wikipedia-edits"),
> parsedJsonObject));
> >> >>> >>>>>> >
> >> >>> >>>>>> > as well as the aforementioned changes to the log4j.xml
> file.
> >> >>> >>>>>> >
> >> >>> >>>>>> > The data pushed into the 'myTopic' topic is nothing more
> than
> >> >>>a
> >> >>> >>>>>> sentence.
> >> >>> >>>>>> >
> >> >>> >>>>>> >
> >> >>> >>>>>> > On Mon, Mar 23, 2015 at 4:16 PM, Ash W Matheson <
> >> >>> >>>>>> ash.mathe...@gmail.com>
> >> >>> >>>>>> > wrote:
> >> >>> >>>>>> >
> >> >>> >>>>>> > > yep, modified log4j.xml to look like this:
> >> >>> >>>>>> > >
> >> >>> >>>>>> > > <root>
> >> >>> >>>>>> > > <priority value="debug" />
> >> >>> >>>>>> > > <appender-ref ref="RollingAppender"/>
> >> >>> >>>>>> > > <appender-ref ref="jmx" />
> >> >>> >>>>>> > > </root>
> >> >>> >>>>>> > >
> >> >>> >>>>>> > > Not sure what you mean by #2.
> >> >>> >>>>>> > >
> >> >>> >>>>>> > > However, I'm running now, not seeing any exceptions, but
> >> >>>still
> >> >>> >>>>>>not
> >> >>> >>>>>> seeing
> >> >>> >>>>>> > > any output from System.out.println(...)
> >> >>> >>>>>> > >
> >> >>> >>>>>> > > On Mon, Mar 23, 2015 at 11:29 AM, Naveen Somasundaram <
> >> >>> >>>>>> > > nsomasunda...@linkedin.com.invalid> wrote:
> >> >>> >>>>>> > >
> >> >>> >>>>>> > >> Hey Ash,
> >> >>> >>>>>> > >> 1. Did you happen to modify your
> log4j.xml
> >> ?
> >> >>> >>>>>> > >> 2. Can you print the class path that was
> >> >>> printed
> >> >>> >>>>>> when the
> >> >>> >>>>>> > >> job started ? I am wondering if log4j was not loaded or
> >> not
> >> >>> >>>>>> present in
> >> >>> >>>>>> > the
> >> >>> >>>>>> > >> path where it¹s looking for. If you have been using
> hello
> >> >>> >>>>>>samza,
> >> >>> >>>>>> it
> >> >>> >>>>>> > should
> >> >>> >>>>>> > >> have pulled it from Maven.
> >> >>> >>>>>> > >>
> >> >>> >>>>>> > >> Thanks,
> >> >>> >>>>>> > >> Naveen
> >> >>> >>>>>> > >>
> >> >>> >>>>>> > >> On Mar 22, 2015, at 10:35 AM, Ash W Matheson <
> >> >>> >>>>>> ash.mathe...@gmail.com>
> >> >>> >>>>>> > >> wrote:
> >> >>> >>>>>> > >>
> >> >>> >>>>>> > >> > Hey all,
> >> >>> >>>>>> > >> >
> >> >>> >>>>>> > >> > Evaluating Samza currently and am running into some
> odd
> >> >>> >>>>>>issues.
> >> >>> >>>>>> > >> >
> >> >>> >>>>>> > >> > I'm currently working off the 'hello-samza' repo and
> >> >>>trying
> >> >>> >>>>>>to
> >> >>> >>>>>> parse a
> >> >>> >>>>>> > >> > simple kafka topic that I've produced through an
> extenal
> >> >>> java
> >> >>> >>>>>> app
> >> >>> >>>>>> > >> (nothing
> >> >>> >>>>>> > >> > other than a series of sentences) and it's failing
> >> pretty
> >> >>> >>>>>>hard
> >> >>> >>>>>> for me.
> >> >>> >>>>>> > >> The
> >> >>> >>>>>> > >> > base 'hello-samza' set of apps works fine, but as soon
> >> >>>as I
> >> >>> >>>>>> change the
> >> >>> >>>>>> > >> > configuration to look at a different Kafka/zookeeper I
> >> >>>get
> >> >>> >>>>>>the
> >> >>> >>>>>> > >> following in
> >> >>> >>>>>> > >> > the userlogs:
> >> >>> >>>>>> > >> >
> >> >>> >>>>>> > >> > 2015-03-22 17:07:09 KafkaSystemAdmin [WARN] Unable to
> >> >>>fetch
> >> >>> >>>>>>last
> >> >>> >>>>>> > offsets
> >> >>> >>>>>> > >> > for streams [myTopic] due to
> >> kafka.common.KafkaException:
> >> >>> >>>>>> fetching
> >> >>> >>>>>> > topic
> >> >>> >>>>>> > >> > metadata for topics [Set(myTopic)] from broker
> >> >>> >>>>>> > >> > [ArrayBuffer(id:0,host:redacted,port:9092)] failed.
> >> >>> Retrying.
> >> >>> >>>>>> > >> >
> >> >>> >>>>>> > >> >
> >> >>> >>>>>> > >> > The modifications are pretty straightforward. In the
> >> >>> >>>>>> > >> > Wikipedia-parser.properties, I've changed the
> following:
> >> >>> >>>>>> > >> > task.inputs=kafka.myTopic
> >> >>> >>>>>> > >> >
> systems.kafka.consumer.zookeeper.connect=redacted:2181/
> >> >>> >>>>>> > >> > systems.kafka.consumer.auto.offset.reset=smallest
> >> >>> >>>>>> > >> >
> >> systems.kafka.producer.metadata.broker.list=redacted:9092
> >> >>> >>>>>> > >> >
> >> >>> >>>>>> > >> > and in the actual java file
> >> >>>WikipediaParserStreamTask.java
> >> >>> >>>>>> > >> > public void process(IncomingMessageEnvelope envelope,
> >> >>> >>>>>> > MessageCollector
> >> >>> >>>>>> > >> > collector, TaskCoordinator coordinator) {
> >> >>> >>>>>> > >> > Map<String, Object> jsonObject = (Map<String,
> >> Object>)
> >> >>> >>>>>> > >> > envelope.getMessage();
> >> >>> >>>>>> > >> > WikipediaFeedEvent event = new
> >> >>> >>>>>> WikipediaFeedEvent(jsonObject);
> >> >>> >>>>>> > >> >
> >> >>> >>>>>> > >> > try {
> >> >>> >>>>>> > >> > System.out.println(event.getRawEvent());
> >> >>> >>>>>> > >> >
> >> >>> >>>>>> > >> > And then following the compile/extract/run process
> >> >>>outlined
> >> >>> >>>>>>in
> >> >>> >>>>>> the
> >> >>> >>>>>> > >> > hello-samza website.
> >> >>> >>>>>> > >> >
> >> >>> >>>>>> > >> > Any thoughts? I've looked online for any 'super
> simple'
> >> >>> >>>>>> examples of
> >> >>> >>>>>> > >> > ingesting kafka in samza with very little success.
> >> >>> >>>>>> > >>
> >> >>> >>>>>> > >>
> >> >>> >>>>>> > >
> >> >>> >>>>>> >
> >> >>> >>>>>>
> >> >>> >>>>>>
> >> >>> >>>>>>
> >> >>> >>>>>> --
> >> >>> >>>>>> Thanks and regards
> >> >>> >>>>>>
> >> >>> >>>>>> Chinmay Soman
> >> >>> >>>>>>
> >> >>> >>>>>
> >> >>> >>>>>
> >> >>> >>>>
> >> >>> >>>
> >> >>> >>
> >> >>>
> >> >>>
> >>
> >>
> >
>
--
Thanks and regards
Chinmay Soman
