SingleThreadEventExecutor shutdown takes long time(the timeout value:15s)

[446744505]

    public static void Main(string[] args)
    {
        var executor = new SingleThreadEventExecutor("", TimeSpan.FromMilliseconds(1000));
        executor.ShutdownGracefullyAsync().Wait();
    }

[fanliang11]

SingleThreadEventExecutor is problematic as concurrent stress testing can cause blocking