Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
Kafka, mail # user - simple producer (kafka 0.7.2) exception


Copy link to this message
-
Re: simple producer (kafka 0.7.2) exception
Oleg Ruchovets 2013-04-08, 10:24
Yes , I resolve this by changing a configuration path in zookeeper
properties dataDir=/tmp/zookeeper.  I made scala code debug and got that I
have cuple of topics from previous executions. One of the topic cause the
exception.
   By the way : do I understand correct that kafka serialize the data on
disc?
What is the serialization polisy?
In case I want to delete / remove topic how can I do in using API?

Thanks
Oleg.
On Mon, Apr 8, 2013 at 6:38 AM, Swapnil Ghike <[EMAIL PROTECTED]> wrote:

> Was a kafka broker running when your producer got this exception?
>
> Thanks,
> Swapnil
>
> On 4/7/13 3:15 AM, "Oleg Ruchovets" <[EMAIL PROTECTED]> wrote:
>
> >try to execute kafka 0.7.2 and got such exception:
> >
> >
> >log4j:WARN No appenders could be found for logger
> >(org.I0Itec.zkclient.ZkConnection).
> >log4j:WARN Please initialize the log4j system properly.
> >Exception in thread "main" java.lang.NumberFormatException: null
> > at java.lang.Integer.parseInt(Integer.java:417)
> > at java.lang.Integer.parseInt(Integer.java:499)
> > at
> >scala.collection.immutable.StringLike$class.toInt(StringLike.scala:208)
> > at scala.collection.immutable.StringOps.toInt(StringOps.scala:31)
> > at
> >kafka.producer.ZKBrokerPartitionInfo$$anonfun$kafka$producer$ZKBrokerParti
> >tionInfo$$getZKTopicPartitionInfo$1$$anonfun$5.apply(ZKBrokerPartitionInfo
> >.scala:167)
> > at
> >kafka.producer.ZKBrokerPartitionInfo$$anonfun$kafka$producer$ZKBrokerParti
> >tionInfo$$getZKTopicPartitionInfo$1$$anonfun$5.apply(ZKBrokerPartitionInfo
> >.scala:167)
> > at
> >scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scal
> >a:206)
> > at
> >scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scal
> >a:206)
> > at scala.collection.Iterator$class.foreach(Iterator.scala:631)
> > at
> >scala.collection.JavaConversions$JIteratorWrapper.foreach(JavaConversions.
> >scala:549)
> > at scala.collection.IterableLike$class.foreach(IterableLike.scala:79)
> > at
> >scala.collection.JavaConversions$JListWrapper.foreach(JavaConversions.scal
> >a:596)
> > at scala.collection.TraversableLike$class.map(TraversableLike.scala:206)
> > at
> >scala.collection.JavaConversions$JListWrapper.map(JavaConversions.scala:59
> >6)
> > at
> >kafka.producer.ZKBrokerPartitionInfo$$anonfun$kafka$producer$ZKBrokerParti
> >tionInfo$$getZKTopicPartitionInfo$1.apply(ZKBrokerPartitionInfo.scala:167)
> > at
> >kafka.producer.ZKBrokerPartitionInfo$$anonfun$kafka$producer$ZKBrokerParti
> >tionInfo$$getZKTopicPartitionInfo$1.apply(ZKBrokerPartitionInfo.scala:163)
> > at scala.collection.Iterator$class.foreach(Iterator.scala:631)
> > at
> >scala.collection.JavaConversions$JIteratorWrapper.foreach(JavaConversions.
> >scala:549)
> > at scala.collection.IterableLike$class.foreach(IterableLike.scala:79)
> > at
> >scala.collection.JavaConversions$JListWrapper.foreach(JavaConversions.scal
> >a:596)
> > at
> >kafka.producer.ZKBrokerPartitionInfo.kafka$producer$ZKBrokerPartitionInfo$
> >$getZKTopicPartitionInfo(ZKBrokerPartitionInfo.scala:163)
> > at
> >kafka.producer.ZKBrokerPartitionInfo.<init>(ZKBrokerPartitionInfo.scala:65
> >)
> > at kafka.producer.Producer.<init>(Producer.scala:47)
> > at kafka.javaapi.producer.Producer.<init>(Producer.scala:33)
> > at kafka.javaapi.producer.Producer.<init>(Producer.scala:40)
> > at kafka.example.Producer.main(Producer.java:66)
> >Disconnected from the target VM, address: '127.0.0.1:49086', transport:
> >'socket'
> >
> >Please advice
> >
> >Thanks
> >Oleg.
>
>