Unused log of netty exception in fe.out

[ccoffline]

This log is print to stderr which redirect to fe.out

java.io.IOException: Connection reset by peer
        at java.base/sun.nio.ch.FileDispatcherImpl.read0(Native Method)
        at java.base/sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
        at java.base/sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:276)
        at java.base/sun.nio.ch.IOUtil.read(IOUtil.java:233)
        at java.base/sun.nio.ch.IOUtil.read(IOUtil.java:223)
        at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:358)
        at io.netty.buffer.PooledByteBuf.setBytes(PooledByteBuf.java:247)
        at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1147)
        at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:347)
        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)
        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:700)
        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:635)
        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:552)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:514)
        at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1044)
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at java.base/java.lang.Thread.run(Thread.java:835)

[stalary]

In what scenario will an error be reported?

[ccoffline]

In what scenario will an error be reported?

Still unknown, but no user has reported impacts.
Diff from #2997, this exception is printed in fe.out instead of fe.warn.log, and continuously.
I doubt that there's e.printStackTrace() in the code but should be using log.warn()