[Bug] NPE of getAndCreateChannel in NettyRemotingClient

[fujian-zfj]

Before Creating the Bug Report

• I found a bug, not just asking a question, which should be created in GitHub Discussions.

• I have searched the GitHub Issues and GitHub Discussions of this repository and believe that this is not a duplicate.

• I have confirmed that this bug belongs to the current repository, not other repositories of RocketMQ.

Runtime platform environment

all

RocketMQ version

latest

JDK Version

all

Describe the Bug

I found a npe bug in method getAndCreateChannel.

It may caused by 'getAndCreateChannelAsync(addr).awaitUninterruptibly()' in method getAndCreateChannel.

Since channelFuture has got from getAndCreateChannelAsync and is judged not null, why not use channelFuture instead of getAndCreateChannelAsync again?

Steps to Reproduce

start broker

What Did You Expect to See?

no npe bug

What Did You See Instead?

an npe bug

Additional Context

No response