Springboot When client network disconnect the server stream still emit item - spring-boot

Question

Version 2.5.1
im new to sprinboot troubleshooting. Once in a while i see this error in the FE application logs when its communicating with BE nodes.
2022-05-24 10:10:09.547 DEBUG 1829 --- [or-http-epoll-3] r.n.h.c.HttpClientOperations : [24acxxxx-xx, L:/ip:port - R:BEVIPfqdn/BEVIPIP/:16120] Receive
d response (auto-read:false) : [X-Admin-Protocol=xxxxx, X-Content-Type-Options=nosniff, X-XSS-Protection=1; mode=block, Cache-Control=no-cache, no-store, max-age=0, must-revalidate, Pragma=no-cache, Expires=0
, Strict-Transport-Security=max-age=31536000 ; includeSubDomains, X-Frame-Options=DENY, Content-Type=application/json, Date=Tue, 24 May 2022 10:10:09 GMT, Keep-Alive=timeout=60, Connection=keep-alive, content-length=16
8]
2022-05-24 10:10:09.547 DEBUG 1829 --- [or-http-epoll-3] r.n.r.DefaultPooledConnectionProvider : [24acxxxx-xx, L:/ip:port - R:BEVIPfqdn/BEVIPIP/:16120] onState
Change(POST{uri=/xx/authenticateClient, connection=PooledConnection{channel=[id: 0x24ac184d, L:/ip:port - R:BEVIPfqdn/BEVIPIP/:16120]}}, [r
esponse_received])
2022-05-24 10:10:09.548 DEBUG 1829 --- [or-http-epoll-3] r.n.c.FluxReceive : [24acxxxx-xx, L:/ip:port - R:BEVIPfqdn/BEVIPIP/:16120] FluxRec
eive{pending=0, cancelled=false, inboundDone=false, inboundError=null}: subscribing inbound receiver
2022-05-24 10:10:09.548 DEBUG 1829 --- [or-http-epoll-3] r.n.h.c.HttpClientOperations : [24acxxxx-xx, L:/ip:port - R:BEVIPfqdn/BEVIPIP/:16120] Receive
d last HTTP packet
2022-05-24 10:10:09.549 TRACE 1829 --- [or-http-epoll-3] r.n.c.ChannelOperations : [24acxxxx, L:/ip:port - R:BEVIPfqdn/BEVIPIP/:16120] Disposing ChannelOperation from a channel
java.lang.Exception: ChannelOperation terminal stack
at reactor.netty.channel.ChannelOperations.terminate(ChannelOperations.java:465)
at reactor.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:702)
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:93)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:280)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1374)
at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1237)
at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1286)
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:507)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:446)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:795)
at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:480)
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:750)
At this time, i see reverse proxy response time very briefly goes slow. How do i go about troubleshooting this? many thanks in advance.