Hi, I will have to check. I can do that tomorrow in college. But if that is the case what should i do?
Should i change the port number and try again? Shefali On Wed, 04 Feb 2009 S D wrote : >Shefali, > >Is your firewall blocking port 54310 on the master? > >John > >On Wed, Feb 4, 2009 at 12:34 PM, shefali pawar <[email protected]>wrote: > > > Hi, > > > > I am trying to set-up a two node cluster using Hadoop0.19.0, with 1 > > master(which should also work as a slave) and 1 slave node. > > > > But while running bin/start-dfs.sh the datanode is not starting on the > > slave. I had read the previous mails on the list, but nothing seems to be > > working in this case. I am getting the following error in the > > hadoop-root-datanode-slave log file while running the command > > bin/start-dfs.sh => > > > > 2009-02-03 13:00:27,516 INFO > > org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG: > > /************************************************************ > > STARTUP_MSG: Starting DataNode > > STARTUP_MSG: host = slave/172.16.0.32 > > STARTUP_MSG: args = [] > > STARTUP_MSG: version = 0.19.0 > > STARTUP_MSG: build = > > https://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.19 -r > > 713890; compiled by 'ndaley' on Fri Nov 14 03:12:29 UTC 2008 > > ************************************************************/ > > 2009-02-03 13:00:28,725 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 0 time(s). > > 2009-02-03 13:00:29,726 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 1 time(s). > > 2009-02-03 13:00:30,727 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 2 time(s). > > 2009-02-03 13:00:31,728 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 3 time(s). > > 2009-02-03 13:00:32,729 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 4 time(s). > > 2009-02-03 13:00:33,730 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 5 time(s). > > 2009-02-03 13:00:34,731 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 6 time(s). > > 2009-02-03 13:00:35,732 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 7 time(s). > > 2009-02-03 13:00:36,733 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 8 time(s). > > 2009-02-03 13:00:37,734 INFO org.apache.hadoop.ipc.Client: Retrying connect > > to server: master/172.16.0.46:54310. Already tried 9 time(s). > > 2009-02-03 13:00:37,738 ERROR > > org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call > > to master/172.16.0.46:54310 failed on local exception: No route to host > > at org.apache.hadoop.ipc.Client.call(Client.java:699) > > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216) > > at $Proxy4.getProtocolVersion(Unknown Source) > > at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:319) > > at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:306) > > at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:343) > > at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:288) > > at > > org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:258) > > at > > org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:205) > > at > > org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1199) > > at > > org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1154) > > at > > org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1162) > > at > > org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1284) > > Caused by: java.net.NoRouteToHostException: No route to host > > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) > > at > > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) > > at sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:100) > > at > > org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:299) > > at > > org.apache.hadoop.ipc.Client$Connection.access$1700(Client.java:176) > > at org.apache.hadoop.ipc.Client.getConnection(Client.java:772) > > at org.apache.hadoop.ipc.Client.call(Client.java:685) > > ... 12 more > > > > 2009-02-03 13:00:37,739 INFO > > org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: > > /************************************************************ > > SHUTDOWN_MSG: Shutting down DataNode at slave/172.16.0.32 > > ************************************************************/ > > > > > > Also, the Pseudo distributed operation is working on both the machines. And > > i am able to ssh from 'master to master' and 'master to slave' via a > > password-less ssh login. I do not think there is any problem with the > > network because cross pinging is working fine. > > > > I am working on Linux (Fedora 8) > > > > The following is the configuration which i am using > > > > On master and slave, <HADOOP_INSTALL>/conf/masters looks like this: > > > > master > > > > On master and slave, <HADOOP_INSTALL>/conf/slaves looks like this: > > > > master > > slave > > > > On both the machines conf/hadoop-site.xml looks like this > > > > <property> > > <name>fs.default.name</name> > > <value>hdfs://master:54310</value> > > <description>The name of the default file system. A URI whose > > scheme and authority determine the FileSystem implementation. The > > uri's scheme determines the config property (fs.SCHEME.impl) naming > > the FileSystem implementation class. The uri's authority is used to > > determine the host, port, etc. for a filesystem.</description> > > </property> > > <property> > > <name>mapred.job.tracker</name> > > <value>master:54311</value> > > <description>The host and port that the MapReduce job tracker runs > > at. If "local", then jobs are run in-process as a single map > > and reduce task. > > </description> > > </property> > > <property> > > <name>dfs.replication</name> > > <value>2</value> > > <description>Default block replication. > > The actual number of replications can be specified when the file is > > created. > > The default is used if replication is not specified in create time. > > </description> > > </property> > > > > namenode is formatted succesfully by running > > > > "bin/hadoop namenode -format" > > > > on the master node. > > > > I am new to Hadoop and I do not know what is going wrong. > > > > Any help will be appreciated. > > > > Thanking you in advance > > > > Shefali Pawar > > Pune, India > >
