AbstractNettyRemotingServer throw RuntimeException when channel=null

[Bughue]

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在AbstractNettyRemotingServer里遇到的channel获取失败，全都是抛出runtimeExp，但AbstractCore只捕捉IOException 和TimeoutException，导致这个包含xid的日志最后没包裹，日志里就看不到xid。我觉得channel拿不到应该是抛IOException？

The channel acquisition failures encountered in AbstractNettyRemotingServer all throw runtimeExp, but AbstractCore only catches IOException and TimeoutException, which results in the log containing xid not being wrapped at the end, and the log is missing the xid. So the failure to get the channel should be an IOException?

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