Download e-book for kindle: Big Data Made Easy: A Working Guide to the Complete Hadoop by Michael Frampton

By Michael Frampton

ISBN-10: 1484200942

ISBN-13: 9781484200940

ISBN-10: 1484200950

ISBN-13: 9781484200957

Many enterprises are discovering that the scale in their info units are outgrowing the potential in their platforms to shop and method them. the knowledge is turning into too gigantic to regulate and use with conventional instruments. the answer: enforcing an immense info system.

As colossal information Made effortless: A operating advisor to the total Hadoop Toolset indicates, Apache Hadoop deals a scalable, fault-tolerant approach 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), trying out (Big Top), and research (Hive).

The challenge is that the net deals IT execs wading into immense info many models of the reality and a few outright falsehoods born of lack of information. what's wanted is a ebook 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, the right way to set up them, how you can configure them, tips on how to combine them, and the way to take advantage of them effectively. and also you want a professional who has labored during this quarter for a decade—someone similar to writer and large facts specialist Mike Frampton.

Big facts Made Easy techniques the matter of dealing with mammoth info units from a structures point of view, and it explains the jobs for every venture (like architect and tester, for instance) and exhibits how the Hadoop toolset can be utilized at each one procedure level. It explains, in an simply understood demeanour and during quite a few examples, the best way to use every one instrument. The publication additionally explains the sliding scale of instruments to be had based upon facts dimension and whilst and the way to exploit them. Big information Made Easy exhibits builders and designers, in addition to testers and undertaking managers, how to:

  • Store significant data
  • Configure immense data
  • Process titanic data
  • Schedule processes
  • Move facts between SQL and NoSQL systems
  • Monitor data
  • Perform mammoth info analytics
  • Report on enormous information techniques and projects
  • Test vast information systems

Big information Made Easy additionally explains the easiest half, that is that this toolset is loose. a person can obtain it and—with the aid of this book—start to exploit it inside of an afternoon. With the talents this booklet will educate you less than your belt, you'll upload worth in your corporation or buyer instantly, let alone your career.

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Additional resources for Big Data Made Easy: A Working Guide to the Complete Hadoop Toolset

Example text

The following example of the fsck command shows that the file system “/” is healthy. No corrupted or underreplicated blocks are listed. By default, there should be two copies of each block saved (the default replication factor value was 2). If the HDFS had failed in this area, it would be shown in the report as “Under-replicated blocks” with a value greater than zero. Status: HEALTHY Total size: 4716611 B Total dirs: 14 Total files:10 Total blocks (validated): 9 (avg. YarnClientImpl is inited. YarnClientImpl is started.

Watches are one-time events. If the contents change, then the watch fires and you will need to reset it. To demonstrate, I create a subnode node2 that contains data2: [zk: localhost:2181(CONNECTED) 9] create /zk-top/node2 'data2' [zk: localhost:2181(CONNECTED) 10] get /zk-top/node2 'data2' 38 Chapter 2 ■ Storing and Configuring Data with Hadoop, YARN, and ZooKeeper Now, I use get to set a watcher on that node. ” When I change the data to “data3” with the next set command, the watcher notices the data change and fires, as shown: [zk: localhost:2181(CONNECTED) 11] get /zk-top/node2 true 'data2' [zk: localhost:2181(CONNECTED) 12] set /zk-top/node2 'data3' WATCHER:: WatchedEvent state:SyncConnected type:NodeDataChanged path:/zk-top/node2 In addition to the basic nodes you’ve been working with, you can create sequential and ephemeral nodes with the create command.

You already used one of the administration commands (-format) when you formatted the file system earlier. Take a second look: hadoop namenode -format The format command starts the name node, executes its command, and then shuts the name node down again. The name node is the centralized place on the HDFS where metadata concerning files in the file system are stored. If the Hadoop file system is running when this command is executed, then HDFS data is lost. I won't run the upgrade command here, but you can use it after releasing a new version of Hadoop, as follows: hadoop namenode -upgrade This upgrade command will create new working directories on the data nodes for the new Hadoop version.

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


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