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The following page has been changed by EstebanMolinaEstolano: http://wiki.apache.org/lucene-hadoop/GettingStartedWithHadoop ------------------------------------------------------------------------------ Take a pass at putting together basic configuration settings for your cluster. Some of the settings that follow are required, others are recommended for more straightforward and predictable operation. * '''Hadoop Environment Settings''' - Ensure that {{{JAVA_HOME}}} is set in {{{hadoop-env.sh}}} and points to the Java installation you intend to use. You can set other environment variables in {{{hadoop-env.sh}}} to suit your requirments. Some of the default settings refer to the variable {{{HADOOP_HOME}}}. The value of {{{HADOOP_HOME}}} is automatically inferred from the location of the startup scripts. {{{HADOOP_HOME}}} is the parent directory of the {{{bin}}} directory that holds the Hadoop scripts. In this instance it is {{{$HADOOP_INSTALL/hadoop}}}. - * '''Jobtracker and Namenode settings''' - Figure out where to run your namenode and jobtracker. Set the variable {{{fs.default.name}}} to the Namenodes intended host:port. Set the variable {{{mapred.job.tracker}}} to the jobtrackers intended host:port. These settings should be in {{{hadoop-site.xml}}}. You may also want to set one or more of the following ports (also in {{{hadoop-site.xml}}}): + * '''Jobtracker and Namenode settings''' - Figure out where to run your namenode and jobtracker. Set the variable {{{fs.default.name}}} to the Namenode's intended host:port. Set the variable {{{mapred.job.tracker}}} to the jobtrackers intended host:port. These settings should be in {{{hadoop-site.xml}}}. You may also want to set one or more of the following ports (also in {{{hadoop-site.xml}}}): * {{{dfs.datanode.port}}} * {{{dfs.info.port}}} * {{{mapred.job.tracker.info.port}}}
