why use brief host in k8s mode.

[naah69]

in NetUtils.java,it use brief host when k8s mode is true .
it can't connect worker when i create worker in difference namespace.

Can you tell me why it use brief host?

for example:

real: dolphinscheduler-worker-dev-0.dolphinscheduler-worker.develop.svc.cluster.local

now: dolphinscheduler-worker-dev-0.dolphinscheduler-worker

log:

[WARN] 2022-01-12 11:49:44.683 org.apache.dolphinscheduler.remote.NettyRemotingClient:[366] - connect to Host{hostWeight=100, workerGroup='develop'} error
java.net.UnknownHostException: dolphinscheduler-worker-dev-0.dolphinscheduler-worker
	at java.net.InetAddress.getAllByName0(InetAddress.java:1281)
	at java.net.InetAddress.getAllByName(InetAddress.java:1193)
	at java.net.InetAddress.getAllByName(InetAddress.java:1127)
	at java.net.InetAddress.getByName(InetAddress.java:1077)
	at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:156)
	at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:153)
	at java.security.AccessController.doPrivileged(Native Method)
	at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:153)
	at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:41)
	at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:61)
	at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:53)
	at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:55)
	at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:31)
	at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:106)
	at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:206)
	at io.netty.bootstrap.Bootstrap.access$000(Bootstrap.java:46)
	at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:180)
	at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:166)
	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:577)
	at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:551)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:490)
	at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:615)
	at io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:604)
	at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
	at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84)
	at io.netty.channel.AbstractChannel$AbstractUnsafe.safeSetSuccess(AbstractChannel.java:989)
	at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:504)
	at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:417)
	at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:474)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:384)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at java.lang.Thread.run(Thread.java:748)
[ERROR] 2022-01-12 11:49:44.684 org.apache.dolphinscheduler.server.master.dispatch.executor.NettyExecutorManager:[164] - send command : Command [type=TASK_EXECUTE_REQUEST, opaque=616, bodyLen=1757] to Host{hostWeight=100, workerGroup='develop'} error
org.apache.dolphinscheduler.remote.exceptions.RemotingException: connect to : Host{hostWeight=100, workerGroup='develop'} fail
	at org.apache.dolphinscheduler.remote.NettyRemotingClient.send(NettyRemotingClient.java:295)
	at org.apache.dolphinscheduler.server.master.dispatch.executor.NettyExecutorManager.doExecute(NettyExecutorManager.java:161)
	at org.apache.dolphinscheduler.server.master.dispatch.executor.NettyExecutorManager.execute(NettyExecutorManager.java:117)
	at org.apache.dolphinscheduler.server.master.dispatch.executor.NettyExecutorManager.execute(NettyExecutorManager.java:51)
	at org.apache.dolphinscheduler.server.master.dispatch.ExecutorDispatcher.dispatch(ExecutorDispatcher.java:99)
	at org.apache.dolphinscheduler.server.master.consumer.TaskPriorityQueueConsumer.dispatch(TaskPriorityQueueConsumer.java:138)
	at org.apache.dolphinscheduler.server.master.consumer.TaskPriorityQueueConsumer.run(TaskPriorityQueueConsumer.java:101)