1

I am writing a connector for Kafka Connect. The error I see during the start up of connector is 

java.lang.IllegalAccessError: tried to access field org.apache.kafka.common.config.ConfigTransformer.DEFAULT_PATTERN from class org.apache.kafka.connect.runtime.AbstractHerder

The error seems to happen at https://github.com/apache/kafka/blob/trunk/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/AbstractHerder.java#L449

Do I need to set this DEFAULT.PATTERN manually? Is this not set by default.

I am using the docker image confluentinc/cp-kafka:5.0.1. The version of connect-api I am using in my connector app is org.apache.kafka:connect-api:2.0.0. I am running my set up inside Kubernetes.

OneCricketeer
  • 179,855
  • 19
  • 132
  • 245
Dilip Murupala
  • 61
  • 4

1 Answers1

1

The issue was resolved when I changed the image to confluentinc/cp-kafka:5.0.0-2.

I already tried this option before posting the question, but the pod was in a Pending state and was refusing to start. I thought that it could have been an issue with the image. Upon doing some more research later, I came to know that sometimes Kubernetes is unable to allot enough resources and hence pods can stay in Pending state.

I tried the image confluentinc/cp-kafka:5.0.0-2 and it works fine.

Dilip Murupala
  • 61
  • 4
  • 1
    Just to add to the information here, if you are using confluentinc/cp-kafka-connect-base image, using version 5.0.0-1 solved this issue for me. – LeYAUable Jun 19 '19 at 15:23