Thanks Stephan and Till. 

Since I couldn't make a working example of Flink and Kafka after struggling
a week, I have to temporarily stop the evaluation work and switch to other
tasks. I hope in the near future, someone can come up with a working sample
of KafkaWordCount, similar to that of Spark sample, and it would greatly
benefit the community.

Wendong


Here are some comments on Java Classloading:

 - The Zookeeper code is implicitly loaded by the Kafka code.
 - When java implicitly loads a class at some point in the program, is uses
the classloader of the class of that point in the program. Here it will use
the class loader that loaded the Kafka code.
 - You have to make sure that the zookeeper dependency is where the kafka
connector is. It will not work to have kafka in /lib and zookeeper in the
fat jar, for example.

But putting everything into the /lib folder should work. Note: Its
important that this is available on all worker machines.







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