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[ubuntu] Hadoop Single Node Cluster problem

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http://ubuntuforums.org – Hey guys Montana here, I have configured Hadoop for single node cluster, when I run my URLS, the .jsp's they work which means Hadoop is working but upon booting Hadoop by formatting a new distributed filesystem Code: bin/hadoop namenode -format I get an SSH error, but then when I actually start Hadoop Code: bin/start-dfs.sh Which should also handle the "${HADOOP_CONF_DIR}" + before I go any further I want to post my Hadoop config, I have the default configuration for Hadoop right now which is Code: <?xml version="1.0"?> <?xml-stylesheet ty (Hardware)

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Submitted by colm on 10/08/2012

Stories similar to [ubuntu] Hadoop Single Node Cluster problem

I am required to hack a single node hadoop "cluster" (cloudera psuedo-distributed) to be able to access it remotely. I have successfully installed hadoop and I have updated the localhost identifiers in the configs to the IP address of the machine. I can run hadoop fs -ls / and all is good. I have created a passphraseless key and I can ssh to the hadoop machine.

cp not working in script 42 weeks 1 day ago

Ok, this is the first script I've ever attempted to write so go easy on me. I'm just trying to simple copy a tar.gz file from the directory the script is located to /usr/local/filename.tar.gz The script is run as root so it shouldn't be a permissions issue.

Full list of error:

hb@localhost:/etc/hadoop/conf$ sudo service hadoop-hdfs-namenode start * Starting Hadoop namenode: starting namenode, logging to /var/log/hadoop-hdfs/hadoop-hdfs-namenode-localhost.out 12/09/10 14:41:09 INFO namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG: host = localhost/127.0.0.1 S

With configuration, installation, and the use of Hadoop in single-node and also the use in multi-node architectures under your belt, you can now turn to the task of developing applications within the Hadoop infrastructure. This article explores the Hadoop APIs and data flow and demonstrates their use with a simple mapper and reducer application.

Mapreduce Compilation in Java 20 weeks 2 days ago

I am following this tutorial.

http://hadoop.apache.org/docs/mapreduce/current/mapred_tutorial.html

javac -classpath ${HADOOP_HOME}/hadoop-core- ${HADOOP_VERSION}.jar:${HADOOP_HOME}/hadoop-mapred-${HADOOP_VERSION}.jar:${HADOOP_HOME}/hadoop-hdfs-${HADOOP_VERSION}.jar -d wordcount_classes

The hadoop version is 0.22.0 and this does not have a hadoop-core-0.22.0.jar though I find hadoop-hdfs-0.22.

I am trying to setup a Pseudo Distributed Hadoop Cluster on my machine. Env Details : Host OS: Windows Guest OS: Ubuntu

Vm's Created one master and one slave.

I want to set up a small (6 node) hadoop/hive/pig cluster.

I see the work in the juju space on charms; however, the current status of deploying a single charm per node will not work for me.

I see ServerTeam Hadoop which talks about re-packaging the bigtop packages.

The cloudera CDH3 installation guide talks about Maverick and Lucid, but not precise.

What am I missing?

Is it at least possible to build Hadoop cluster from Raspberry Pi-based nodes? Can such a cluster meet hardware requirements of Hadoop? And if so, how much Raspberry Pi nodes are required to meet requirements?

I understand that a cluster from several Raspberry Pi nodes being cheap is not powerful.

i want to access hbase table from hadoop mapreduce....i m using windowsXP and cygwin i m using hadoop-0.20.2 and hbase-0.92.0 hadoop cluster is working fine....i am able to run mapreduce wordcount successfully on 3 pc's hbase is also working .....i can cerate table from shell

i have tried many examples but they are not working....when i try to compile it using javac Example.java

it gives error..