Database Reference
In-Depth Information
Figure 6-4. Log on to the name node
Once valid credentials are provided, you are presented with the desktop of your cluster's name node. HDInsight
distribution creates three shortcuts for you, and you will see them on the name node's desktop as shown in Figure 6-5 .
The shortcuts are
Hadoop Command Line : Invokes the command line, which is the traditional Windows
command prompt launched from the c:\apps\dist\hadoop-1.2.0.1.3.1.0-06\ directory.
This is the base for command-line executions of the Hadoop commands, as well as for
commands relating to Hive, Pig, Sqoop, and several other supporting projects.
Hadoop MapReduce Status : This is a Java-based web application that comes with the Apache
Hadoop distribution. The MapReduce status portal displays the MapReduce configurations
based on the config file mapred-site.xml . It also shows a history of all the map and reduce
task executions in the cluster based on the job id. You can drill down to individual jobs and
their tasks to examine a MapReduce job execution.
Hadoop Name Node Status : This is also a Java-based web portal prebuilt in Apache Hadoop.
The NameNode status portal displays the file system health as well as the cluster health in
terms of the number of live nodes, dead nodes, and decommissioning nodes. You can also
navigate through the HDFS and load chunks of data from job output files for display.
 
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