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java.lang.InstantiationException: org.apache.storm.kafka.bolt.selector.DefaultTopicSelector

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While trying to run the SAM topology using HDF 3.0.0 sandbox, I am getting the below exception. I have only 2 components in the canvas. 1) Get input from Kafka Topic 2) Write the contents from the topic to HDFS Sink. java.lang.InstantiationException: org.apache.storm.kafka.bolt.selector.DefaultTopicSelector The engine behind the scene is Storm. While trying to execute the flow, the above mentioned error occurs.

19483-sams.pngScreenshot will make the issue clear. Upon execution of the flow, the exception occurs. Please help.


@bigdatafrog Sek

This is a strange error since its related to a kafka sink. And you dont even have a kafka sink. One of the customers also ran in to similar issue. And the error was fixed after they created a new app. Can you try creating a new app and see if it fixes the issue? Also, do you remember the steps that can be used to reproduce the issue? Did you have a kafka sink in your app at some point?

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