Ok, got the console up and running, but what should I be looking for? On Mon, Mar 23, 2015 at 5:32 PM, Chinmay Soman <chinmay.cere...@gmail.com> wrote:
> You can use Jconsole / Jvisualvm and connect to the JMX port as documented > here: > > http://samza.apache.org/learn/documentation/0.8/container/jmx.html > > > > 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.MetricsSnapshotReporterFactory > > metrics.reporter.snapshot.stream=kafka.metrics > > > > > metrics.reporter.jmx.class=org.apache.samza.metrics.reporter.JmxReporterFactory > > > > 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 it’s 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 >
