When I try to launch the namenode and the datanode in MRv2, the datanode
can't connect to the namenode, giving me the error below. I also put the
core-site file that I use below.
The Firewall in the hosts is disabled. I don't have excluded nodes
defined. Why the datanodes can't connect to the namenode? Any help to
solve this problem?
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException):
Datanode denied communication with namenode: DatanodeRegistrati
on(0.0.0.0, storageID=DS-1449645935-172.16.1.10-50010-1389224474955,
infoPort=50075, ipcPort=50020,
storageInfo=lv=-40;cid=CID-9a8571a3-17ae-49b2-b957-b009e88b9f9a;nsid=9
34416283;c=0)
at
org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager.registerDatanode(DatanodeManager.java:631)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.registerDatanode(FSNamesystem.java:3398)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.registerDatanode(NameNodeRpcServer.java:881)
at
org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolServerSideTranslatorPB.registerDatanode(DatanodeProtocolServerSideTranslatorPB.java:90)
at
org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos$DatanodeProtocolService$2.callBlockingMethod(DatanodeProtocolProtos.java:18295)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:454)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1014)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1741)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1737)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:416)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1478)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1735)
at org.apache.hadoop.ipc.Client.call(Client.java:1235)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
at com.sun.proxy.$Proxy9.registerDatanode(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:622)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83)
at com.sun.proxy.$Proxy9.registerDatanode(Unknown Source)
at
org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolClientSideTranslatorPB.registerDatanode(DatanodeProtocolClientSideTranslatorPB.java:146)
at
org.apache.hadoop.hdfs.server.datanode.BPServiceActor.register(BPServiceActor.java:623)
at
org.apache.hadoop.hdfs.server.datanode.BPServiceActor.connectToNNAndHandshake(BPServiceActor.java:225)
at
org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:664)
at java.lang.Thread.run(Thread.java:701)
I set the core-site.xml
<configuration>
<property> <name>fs.default.name <http://fs.default.name></name>
<value>hdfs://10.103.0.17:9000 <http://10.103.0.17:9000></value> </property>
<property> <name>hadoop.tmp.dir</name>
<value>/tmp/hadoop-temp</value> </property>
<property><name>hadoop.proxyuser.root.hosts</name><value>*</value></property>
<property><name>hadoop.proxyuser.root.groups</name><value>*</value></property>
</configuration>
--
Best regards,
