Hi,
For the past 6 months,I am the dev for our solution written on top of 
kafka-0.8.1.1. It is in stable for us. We thought we would upgrade to 
kafka-0.9.0.1.
With the server upgrade, we did not face any issues.

We have our own solution built to extract the messages and write to different 
destinations and also messages read by storm. For our unit tests we were using 
the following maven artifact

<groupId>org.apache.kafka</groupId>

<artifactId>kafka_2.9.2</artifactId>

<version>0.8.1.1</version>


I could not find, 0.9.0.1 version for kafka_2.9.2. Hence I moved to kafka_2.11 
first. This is the artifact used:

<groupId>org.apache.kafka</groupId>

<artifactId>kafka_2.11</artifactId>

<version>0.9.0.1</version>


I was running into following issue:

  *   scala.ScalaObject not found issue
  *   java.lang.NoSuchMethodError: 
scala.Predef$.ArrowAssoc(Ljava/lang/Object;)Ljava/lang/Object;
  *   kafkaConfig<init> issue with NoSuchMethodError 
(Ljava/util/map;)Ljava/util/map

Also most of the time, I would run into KafkaServerStartable(both in 
kafka_2.10-0.9.0.1 and kafka_2.11-0.9.0.1) hang issue. But with the same unit 
tests, I never got into kafka server hang issue with kafka_2.9.2.


Could you please help me with my problem ?

Am I missing anything?


Thanks,

Divya

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