Hello @Rajkumar Venkatasamy,
First of all, sorry for the late reply: these last few weeks have been busy for me :-)
Unfortunately, I don't have any experience with the Kafka Consumer.
The only thing that comes to my mind is the JDK. Specially on this last version, plenty of people have been having troubles because of it.
The list of supported JDKs can be seen here: https://help.pentaho.com/Documentation/9.0/Setup/Components_Reference#Java_virtual_machine
Please check if the one you're using is there.
Regards,
Sérgio Ribeiro
Porto - Portugal