Big Data Made Easy: A Working Guide to the Complete Hadoop by Michael Frampton

By Michael Frampton

Many organizations are discovering that the scale in their facts units are outgrowing the potential in their structures to shop and strategy them. the knowledge is turning into too sizeable to regulate and use with conventional instruments. the answer: enforcing a massive information system.

As enormous info Made effortless: A operating advisor to the total Hadoop Toolset indicates, Apache Hadoop bargains a scalable, fault-tolerant procedure for storing and processing facts in parallel. It has a truly wealthy toolset that permits for garage (Hadoop), configuration (YARN and ZooKeeper), assortment (Nutch and Solr), processing (Storm, Pig, and Map Reduce), scheduling (Oozie), relocating (Sqoop and Avro), tracking (Chukwa, Ambari, and Hue), checking out (Big Top), and research (Hive).

The challenge is that the net deals IT execs wading into substantial info many models of the reality and a few outright falsehoods born of lack of knowledge. what's wanted is a publication similar to this one: a wide-ranging yet simply understood set of directions to give an explanation for the place to get Hadoop instruments, what they could do, easy methods to set up them, find out how to configure them, find out how to combine them, and the way to take advantage of them effectively. and also you desire knowledgeable who has labored during this zone for a decade—someone similar to writer and large facts professional Mike Frampton.

Big information Made Easy ways the matter of dealing with gigantic information units from a platforms viewpoint, and it explains the jobs for every undertaking (like architect and tester, for instance) and indicates how the Hadoop toolset can be utilized at each one approach degree. It explains, in an simply understood demeanour and during a variety of examples, easy methods to use each one instrument. The publication additionally explains the sliding scale of instruments to be had based upon info dimension and while and the way to take advantage of them. Big facts Made Easy indicates builders and designers, in addition to testers and undertaking managers, how to:

  • Store huge data
  • Configure mammoth data
  • Process substantial data
  • Schedule processes
  • Move information between SQL and NoSQL systems
  • Monitor data
  • Perform colossal information analytics
  • Report on large info techniques and projects
  • Test sizeable info systems

Big info Made Easy additionally explains the easiest half, that's that this toolset is unfastened. someone can obtain it and—with assistance from this book—start to take advantage of it inside of an afternoon. With the talents this publication will train you below your belt, you are going to upload price for your corporation or patron instantly, let alone your career.

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Extra info for Big Data Made Easy: A Working Guide to the Complete Hadoop Toolset

Example text

If you don’t specifically create one, YARN will create a directory under /tmp. done-dir /var/lib/hadoop-mapreduce/jobhistory/donedir The directories needed for staging must be created on the file system. You set their ownership and group membership to yarn, then set the permissions: [root@hc1nn conf]# mkdir -p /var/lib/hadoop-mapreduce/jobhistory/intermediate/donedir [root@hc1nn conf]# mkdir -p /var/lib/hadoop-mapreduce/jobhistory/donedir [root@hc1nn conf]# chown -R yarn:yarn /var/lib/hadoop-mapreduce/jobhistory/intermediate/donedir [root@hc1nn conf]# chown -R yarn:yarn /var/lib/hadoop-mapreduce/jobhistory/donedir [root@hc1nn conf]# chmod 1777 /var/lib/hadoop-mapreduce/jobhistory/intermediate/donedir [root@hc1nn conf]# chmod 750 /var/lib/hadoop-mapreduce/jobhistory/donedir 44 Chapter 2 ■ Storing and Configuring Data with Hadoop, YARN, and ZooKeeper Now it’s time to start the Hadoop servers.

To access the configuration details for server hc1r1m2, therefore, you use the nc command to issue a conf command. Press Enter after both the nc command line and the conf command on the following line: [hadoop@hc1r1m2 ~]$ nc hc1r1m2 2181 conf clientPort=2181 dataDir=/var/lib/zookeeper/version-2 dataLogDir=/var/lib/zookeeper/version-2 tickTime=2000 maxClientCnxns=50 minSessionTimeout=4000 maxSessionTimeout=40000 serverId=2 initLimit=10 syncLimit=5 electionAlg=3 electionPort=61050 quorumPort=60050 peerType=0 35 Chapter 2 ■ Storing and Configuring Data with Hadoop, YARN, and ZooKeeper This has outputted the configuration of the ZooKeeper server on hc1r1m2.

Out Note that the Job Tracker has been started on the name node and a Task Tracker on each of the data nodes. Again, check all of the logs for errors. Running a Map Reduce Job Check When your Hadoop V1 system has all servers up and there are no errors in the logs, you’re ready to run a sample Map Reduce job to check that you can run tasks. For example, try using some data based on works by Edgar Allan Poe. I have downloaded this data from the Internet and have stored it on the Linux file system under /tmp/edgar.

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