Hi:
when I run kafka streams applications for a period of time
and will be throw ERROR

.1) questions

org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.error.301|[Consumer
 clientId=filter-StreamThread-1-consumer, groupId=filter] Offset commit failed 
on partition sample-1 at offset 68067604: The coordinator is not aware of this 
member.
I check broker logs and found some warnnings

 Member filter-StreamThread-3-consumer-7ce502f2-51d6-4042-9ddb-ffdb0ed37894 in 
group filter has failed, removing it from the group 
(kafka.coordinator.group.GroupCoordinator)

the all broker is health.
why sometimes will be throw  this error?

.2) questions

brokers sometimes throw the WARNNing:

java.io.IOException: Connection to 1 was disconnected before the response was 
read

is it mens that the broker which broker.id is 1 is't health ?
but I check topic describe found all broker is well

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