docker上已经成功部署了hdfs应用，jps命令也显示了namenode和datanode启动正常。浏览器显示 宿主机ip：50070 页面

我在eclipse使用java连接hdfs，代码如下：

FileSystem hdfs;

Configuration conf = new Configuration();

try {

hdfs = FileSystem.get(new URI("hdfs://10.8.2.11:9999"),conf);

Path des =new Path("E:/AB4/hdfs/worksapce");

String srcPath = "/abcloud";

Path src = new Path(srcPath);

hdfs.copyFromLocalFile(false,true,des, src);

运行结果：

org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /abcloud/test.txt could only be replicated to 0 nodes instead of minReplication (=1). There are 1 datanode(s) running and 1 node(s) are excluded in this operation.

at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1559)

at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3245)

at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:663)

at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:482)

at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)

at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)

at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:975)

at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)

at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2036)

at java.security.AccessController.doPrivileged(Native Method)

at javax.security.auth.Subject.doAs(Subject.java:415)

at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692)

at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2034)

at org.apache.hadoop.ipc.Client.call(Client.java:1411)

at org.apache.hadoop.ipc.Client.call(Client.java:1364)

at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)

at com.sun.proxy.$Proxy7.addBlock(Unknown Source)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)

at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)

at com.sun.proxy.$Proxy7.addBlock(Unknown Source)

at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:368)

at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1449)

at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1270)

at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:526)

有没有大神曾在docker上成功部署hdfs,并在可以使用java api操作的，分享下经验

补充：我使用eclipse-hadoop插件连接后，文件系统里有那个文件，但是没有内容