Running the Hadoop example in pseudo-distributed mode on vm

Question

I have a Hadoop setup on VMware OpenSuse 11.2 using Virtualbox. I created the necessary settings. I have successfully completed this example offline. But in psuedo-distributed mode, I get the following error:

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$./bin/hadoop fs -put conf input
10/04/13 15:56:25 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.net.SocketException: Protocol not available                                                              
10/04/13 15:56:25 INFO hdfs.DFSClient: Abandoning block blk_-8490915989783733314_1003        
10/04/13 15:56:31 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.net.SocketException: Protocol not available                                                              
10/04/13 15:56:31 INFO hdfs.DFSClient: Abandoning block blk_-1740343312313498323_1003        
10/04/13 15:56:37 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.net.SocketException: Protocol not available                                                              
10/04/13 15:56:37 INFO hdfs.DFSClient: Abandoning block blk_-3566235190507929459_1003        
10/04/13 15:56:43 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.net.SocketException: Protocol not available                                                              
10/04/13 15:56:43 INFO hdfs.DFSClient: Abandoning block blk_-1746222418910980888_1003        
10/04/13 15:56:49 WARN hdfs.DFSClient: DataStreamer Exception: java.io.IOException: Unable to create new block.                                                                           
        at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2845)                                                                                    
        at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2102) 
        at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2288)                                                                                         

10/04/13 15:56:49 WARN hdfs.DFSClient: Error Recovery for block blk_-1746222418910980888_1003 bad datanode[0] nodes == null                                                               
10/04/13 15:56:49 WARN hdfs.DFSClient: Could not get block locations. Source file "/user/max/input/core-site.xml" - Aborting...                                                           
put: Protocol not available                                                                  
10/04/13 15:56:49 ERROR hdfs.DFSClient: Exception closing file /user/max/input/core-site.xml : java.net.SocketException: Protocol not available
java.net.SocketException: Protocol not available
        at sun.nio.ch.Net.getIntOption0(Native Method)
        at sun.nio.ch.Net.getIntOption(Net.java:178)
        at sun.nio.ch.SocketChannelImpl$1.getInt(SocketChannelImpl.java:419)
        at sun.nio.ch.SocketOptsImpl.getInt(SocketOptsImpl.java:60)
        at sun.nio.ch.SocketOptsImpl.sendBufferSize(SocketOptsImpl.java:156)
        at sun.nio.ch.SocketOptsImpl$IP$TCP.sendBufferSize(SocketOptsImpl.java:286)
        at sun.nio.ch.OptionAdaptor.getSendBufferSize(OptionAdaptor.java:129)
        at sun.nio.ch.SocketAdaptor.getSendBufferSize(SocketAdaptor.java:328)
        at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.createBlockOutputStream(DFSClient.java:2873)
        at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2826)
        at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2102)
        at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2288)

Answer 1

It looks like there are no active data nodes in the cluster. Have you checked if live nodes are displayed on the status page? http: // localhost: 50070 /

Launch all Hadoop daemons using the $ bin / start-all.sh command.

Answer 2

You have launched the Hadoop daemons. This needs to be done in psuedo-dist mode, unlike offline mode. You start them using something like:

$bin\start-all.sh

.

? - NameNode JobTracker?

Answer 3

Perhaps try using a pre-configured virtual machine? http://www.cloudera.com/developers/downloads/virtual-machine/ I think this is probably the best way to start learning haopa, and these problems should not be there.