Apache kafka frequently connect and close connection in nodejs

In my node application I am using kafka with kafka-node npm package and I have custom connection check flow like below,

client.on("close", () => {
  console.log("kafka close");
});

client.on("connect", function () {
  console.log("kafka connect");
});

client.on("reconnect", () => {
  console.log("kafka re-connect"); 
});

while on real time that kafka logged like below,

kafka close
kafka close
kafka close
kafka close
kafka close
kafka close
kafka close
kafka close
kafka connect
kafka close
kafka connect
kafka close
kafka connect

I don't know why kafka react like this