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Support Article

Unable to overwrite runtime class for Kafka runtime connection



When configuring Kafka in  Pega with SASL mechanism of SCRAM-SHA-*, the user name and password are loaded using the Kafka.config file. The -D is loaded and added to Pega  JVM, and a module is created to expose the authentication class. Finally, the Data-Admin-Kafka.validate must be overwritten such that it uses the client Java class. However, unable to overwrite the runtime class for Kafka runtime connection.

Error Messages

Error connecting to Kafka. Timeout expired while fetching topic metadata

Steps to Reproduce

  1. Set the SASL_SSL security profile and SCRAM-SHA-256 mechanism in the kafka_server_jaas configuration file.
  2. Set Pega's -D JAVA_OPTS argument with the file location.
  3. Test the Kafka rule.

Root Cause

This issue was determined to be a product enhancement request.
Pega does not support SCRAM-SHA* or overwrite the Kafka configuration.


An enhancement request, FDBK-30087, is created for  consideration by Pega Product Management.


Published April 3, 2019 - Updated December 2, 2021

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