Apache Sqoop Cookbook by Kathleen Ting, Jarek Jarcec Cecho

By Kathleen Ting, Jarek Jarcec Cecho

Integrating facts from a number of assets is vital within the age of massive info, however it could be a not easy and time-consuming activity. this useful cookbook offers dozens of ready-to-use recipes for utilizing Apache Sqoop, the command-line interface program that optimizes info transfers among relational databases and Hadoop.

Sqoop is either strong and bewildering, yet with this cookbook’s problem-solution-discussion layout, you’ll fast the way to set up after which observe Sqoop on your atmosphere. The authors supply MySQL, Oracle, and PostgreSQL database examples on GitHub so you might simply adapt for SQL Server, Netezza, Teradata, or different relational systems.
• move information from a unmarried database desk into your Hadoop environment
• retain desk info and Hadoop in sync by means of uploading info incrementally
• Import info from a couple of database desk
• customise transferred facts through calling a number of database features
• Export generated, processed, or backed-up facts from Hadoop for your database
• Run Sqoop inside of Oozie, Hadoop’s really expert workflow scheduler
• Load info into Hadoop’s information warehouse (Hive) or database (HBase)
• deal with install, connection, and syntax concerns universal to express database proprietors

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Figure 2-2 illustrates a pattern in minutes of usage that a possible churner may exhibit before terminating his account. However, different groups of individuals may be exhibiting this behavior, for example, teenage girls with large family and friend circles, 30-something single male professionals, etc. Understanding the particular characteristics of each of these groups enables businesses to develop campaigns to retain such customers or to increase their service usage. Data mining can identify the important factors or attributes that lead to a specific behavior, as well as group individuals according to their behavior.

This can be in the form of, for example, rules that define customer profiles, common co-occurrences of product sales enabling cross-sell, or a representative case that describes a set of patients susceptible to a type of cancer. Zinc is added in dust form to the de-areated solution, which is drawn under pressure through a filter press; which causes the gold and zinc to precipitate onto canvas (heavy cloth) filter leaves. This zinc-gold precipitate (condensed into a solid) is then cleaned from the filters while extreme heat burns off the zinc.

This section takes this metaphor to its limit by contrasting a description of the gold mining process [Wells 2006] with data mining. Gold mining involves the science, technology, and business of the discovery of gold, in addition to its removal and sale in the marketplace. Gold may be found in many places, most commonly rock but even sea water; in very small quantities. More often it is found in greater quantities in veins associated with igneous rocks, rocks created by heat such as quartzite. “Data Mining” is somewhat of a misnomer since we are not trying to discover “data,” but the knowledge that is present in data.

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