HDFS中javaAPI创建文件写入内容报错:INFO hdfs.DFSClient: Exception in createBlockOutputStream
19/11/1120:33:26INFOhdfs.DFSClient:ExceptionincreateBlockOutputStreamjava.net.ConnectException:Connectionrefused:nofurtherinformationatsun.nio.ch.SocketChannelImpl.checkConnect(NativeMethod)atsun.nio.