November 2014
Beginner to intermediate
326 pages
7h 4m
English
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Installing the Hadoop and MapReduce packages
Let's install Hadoop and other components such as NameNode, DataNode, MapReduce, secondary NameNode, and so on using the yum command available in RHEL distributions:
- Install the components using the following commands:
sudo yum clean all; sudo yum install hadoop-hdfs-namenode sudo yum install hadoop-hdfs-secondarynamenode sudo yum install hadoop-0.20-mapreduce-tasktrackerhadoop-hdfs-datanode sudo yum install hbase
- Verify whether these components installed successfully using the
rpm –qa<hadoop/hbase>command:You can start and stop the processes using the following commands:
/usr/lib/hadoop/bin/hadoop-daemon.sh<start/stop><daemon name> /usr/lib/hbase/bin/hbase-daemon.sh<start/stop><daemon name>
- Be careful ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.