Cover image for Instant Apache Hive Essentials How-to.
Instant Apache Hive Essentials How-to.
Title:
Instant Apache Hive Essentials How-to.
Author:
Lee, Darren.
ISBN:
9781782169482
Personal Author:
Edition:
1st ed.
Physical Description:
1 online resource (83 pages)
Contents:
Instant Apache Hive Essentials How-to -- Instant Apache Hive Essentials How-to -- Credits -- About the Author -- About the Reviewer -- www.PacktPub.com -- Support files, eBooks, discount offers and more -- Why Subscribe? -- Free Access for Packt account holders -- Preface -- What this book covers -- What you need for this book -- Who this book is for -- Conventions -- Reader feedback -- Customer support -- Downloading the example code -- Errata -- Piracy -- Questions -- 1. Instant Apache Hive Essentials How-to -- Tables and queries (Simple) -- How to do it... -- How it works... -- There's more... -- Understanding complex data types (Simple) -- How to do it... -- How it works... -- There's more... -- Using Hive non-interactively (Simple) -- Getting ready -- How to do it... -- How it works... -- Join optimizations (Medium) -- How to do it... -- How it works... -- Map join -- Bucketed tables -- There's more... -- Multiple joins -- Skew joins -- Multiple selects -- List bucketing and skew joins -- Setting the file format (Simple) -- How to do it... -- How it works... -- Writing a custom SerDe (Intermediate) -- How to do it... -- How it works... -- Object inspectors -- Initialization -- Serialization -- Deserialization -- Using static partitions (Intermediate) -- Getting ready -- How to do it... -- How it works... -- There's more... -- Loading data into partitioned internal tables -- Writing data into specific partitions from queries -- Using dynamic partitions (Intermediate) -- How to do it... -- How it works... -- Using functions (Simple) -- How to do it... -- How it works... -- Adding custom logic with streaming (Intermediate) -- Getting ready -- How to do it... -- How it works... -- Simple user-defined functions (Intermediate) -- Getting ready -- How to do it... -- How it works... -- Advanced user-defined functions (Advanced) -- How to do it...

How it works... -- Initialization -- Evaluation -- The display string -- User-defined table-generating functions (Advanced) -- How to do it... -- How it works... -- Initialization -- Processing inputs -- Final output -- User-defined aggregation functions (Advanced) -- Getting ready -- How to do it... -- How it works... -- The resolver -- The modes of evaluation -- Initializing the evaluator -- Aggregation buffers -- The logic of aggregation -- There's more...
Abstract:
Filled with practical, step-by-step instructions and clear explanations for the most important and useful tasks.This book provides quick recipes for using Hive to read data in various formats, efficiently querying this data, and extending Hive with any custom functions you may need to insert your own logic into the data pipeline.This book is written for data analysts and developers who want to use their current knowledge of SQL to be more productive with Hadoop. It assumes that readers are comfortable writing SQL queries and are familiar with Hadoop at the level of the classic WordCount example.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
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