MessageSizeTooLarge when log forwarding to Kafka in RHOCP 4

Issue

• After configuring the clusterlogforwarder to forward logs to external Kafka, the below logs are visible in fluentd pod:

  2021-07-14 17:32:45 +0000 [warn]: Send exception occurred: Kafka::MessageSizeTooLarge
  2021-07-14 17:32:45 +0000 [warn]: Exception Backtrace : /usr/local/share/gems/gems/ruby-kafka-1.1.0/lib/kafka/protocol.rb:160:in `handle_error'
  2021-07-14 17:32:45 +0000 [warn]: failed to flush the buffer. retry_time=20 next_retry_seconds=2021-07-14 17:33:48 +0000 chunk="5c542ac822c737b83fe4376514eca5b8" error_class=Kafka::MessageSizeTooLarge error="Kafka::MessageSizeTooLarge"