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Kafka, mail # dev - having problem with 0.8 gzip compression


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Re: having problem with 0.8 gzip compression
Scott Wang 2013-07-09, 04:38
No, I did not start the consumer before the producer.  I actually started
the producer first and nothing showed up in the consumer unless I commented
out this line -- props.put("compression.codec", "gzip").    If I commented
out the compression codec, everything just works.
On Mon, Jul 8, 2013 at 9:07 PM, Jun Rao <[EMAIL PROTECTED]> wrote:

> Did you start the consumer before the producer? Be default, the consumer
> gets only the new data?
>
> Thanks,
>
> Jun
>
>
> On Mon, Jul 8, 2013 at 2:53 PM, Scott Wang <
> [EMAIL PROTECTED]> wrote:
>
> > I am testing with Kafka 0.8 beta and having problem of receiving message
> in
> > consumer.  There is no error so does anyone have any insights.  When I
> > commented out the "compression.code" everything works fine.
> >
> > My producer:
> > public class TestKafka08Prod {
> >
> >     public static void main(String [] args) {
> >
> >         Producer<Integer, String> producer = null;
> >         try {
> >             Properties props = new Properties();
> >             props.put("metadata.broker.list", "localhost:9092");
> >             props.put("serializer.class",
> > "kafka.serializer.StringEncoder");
> >             props.put("producer.type", "sync");
> >             props.put("request.required.acks","1");
> >             props.put("compression.codec", "gzip");
> >             ProducerConfig config = new ProducerConfig(props);
> >             producer = new Producer<Integer, String>(config);
> >             int j=0;
> >             for(int i=0; i<10; i++) {
> >                 KeyedMessage<Integer, String> data = new
> > KeyedMessage<Integer, String>("test-topic", "test-message: "+i+"
> > "+System.currentTimeMillis());
> >                 producer.send(data);
> >
> >             }
> >
> >         } catch (Exception e) {
> >             System.out.println("Error happened: ");
> >             e.printStackTrace();
> >         } finally {
> >             if(null != null) {
> >                 producer.close();
> >             }
> >
> >             System.out.println("Ened of Sending");
> >         }
> >
> >         System.exit(0);
> >     }
> > }
> >
> >
> > My consumer:
> >
> > public class TestKafka08Consumer {
> >     public static void main(String [] args) throws UnknownHostException,
> > SocketException {
> >
> >         Properties props = new Properties();
> >         props.put("zookeeper.connect", "localhost:2181/kafka_0_8");
> >         props.put("group.id", "test08ConsumerId");
> >         props.put("zk.sessiontimeout.ms", "4000");
> >         props.put("zk.synctime.ms", "2000");
> >         props.put("autocommit.interval.ms", "1000");
> >
> >         ConsumerConfig consumerConfig = new ConsumerConfig(props);
> >
> >         ConsumerConnector consumerConnector =
> > kafka.consumer.Consumer.createJavaConsumerConnector(consumerConfig);
> >
> >         String topic = "test-topic";
> >         Map<String, Integer> topicCountMap = new HashMap<String,
> > Integer>();
> >         topicCountMap.put(topic, new Integer(1));
> >         Map<String, List<KafkaStream<byte[], byte[]>>> consumerMap =
> > consumerConnector.createMessageStreams(topicCountMap);
> >         KafkaStream<byte[], byte[]> stream =
> >  consumerMap.get(topic).get(0);
> >
> >         ConsumerIterator<byte[], byte[]> it = stream.iterator();
> >
> >         int counter=0;
> >         while(it.hasNext()) {
> >             try {
> >                 String fromPlatform = new String(it.next().message());
> >                 System.out.println("The messages: "+fromPlatform);
> >             } catch(Exception e) {
> >                 e.printStackTrace();
> >             }
> >         }
> >         System.out.println("SystemOut");
> >     }
> > }
> >
> >
> > Thanks
> >
>