error in fetch kafka.server.Replicafetcherthread

3个节点组成的KAFKA集群，当前只有一个topic，每天吞吐量4000万。之前每天凌晨报此错误，后来调优了内存，一个星期后再次报错，请问半先生遇到过没？

WARN [ReplicaFetcherThread-0-1],Error in fetch kafka.server.ReplicaFetcherThread$FetchRequest@603b5f9f (kafka.server.ReplicaFe...
io.IOExcepiton.Connection to 1 was disconnected before the response was read