Kathleen Ting, Jarek Jarcec Cecho's Apache Sqoop Cookbook PDF
By Kathleen Ting, Jarek Jarcec Cecho
ISBN-10: 1449364624
ISBN-13: 9781449364625
Integrating facts from a number of assets is vital within the age of massive facts, however it could be a demanding and time-consuming job. this useful cookbook offers dozens of ready-to-use recipes for utilizing Apache Sqoop, the command-line interface program that optimizes facts transfers among relational databases and Hadoop.
Sqoop is either robust and bewildering, yet with this cookbook’s problem-solution-discussion structure, you’ll quick the way to set up after which practice 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
• continue desk info and Hadoop in sync by way of uploading info incrementally
• Import facts from a couple of database desk
• customise transferred info by way of calling a number of database services
• Export generated, processed, or backed-up information from Hadoop in your database
• Run Sqoop inside of Oozie, Hadoop’s really expert workflow scheduler
• Load info into Hadoop’s facts warehouse (Hive) or database (HBase)
• deal with set up, connection, and syntax concerns universal to precise database proprietors
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Den einzelnen Anwendungen und Schemata eine in Sachen Verfügbarkeit und Laufzeitverhalten optimierte Umgebung zu bieten. Beide Aspekte werden im Folgenden näher erläutert. 50 Installation und Aufbau einer Datenbank Das »Datenbankmodell« Die Frage, welche Daten und Schemata und welche Anwendungen mit ihnen in welcher Datenbank installiert und betrieben werden sollen, lässt sich am besten vor dem Hintergrund der wesentlichen, zentralen Attribute einer Oracle-Datenbank und -Instanz erörtern. Die Festlegung der folgenden Datenbankattribute ist in diesem Zusammenhang wichtig: Bestimmung der Blockgröße Bis zur Version Oracle8i hat jede Datenbank eine globale Blockgröße, die über den Serverparameter db_block_size festgelegt wird und Größen zwischen 2 K und 64 K annehmen kann.
10 alter database
Falls große Leistungsreserven bereitgestellt werden müssen, sollten zunächst die einzelnen Prozessoren so leistungsfähig wie möglich eingesetzt und erst dann eine Mehrprozessorkonfiguration in Betracht gezogen werden. Gründe hierfür sind, dass eine solche Konfiguration immer eine gewisse zusätzliche Belastung gegenüber einem Einprozessorsystem bedeutet und dass für jedes System eine absolute Grenze der Skalierbarkeit bezüglich der Anzahl der Prozessoren gegeben ist, die man mit kleinen Prozessoren natürlich schneller erreicht.
Apache Sqoop Cookbook by Kathleen Ting, Jarek Jarcec Cecho
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