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Apache Hive Essentials

You're reading from Apache Hive Essentials

Product type Book

Published in Feb 2015

Publisher Packt

ISBN-13 9781783558575

Pages 208 pages

Edition 1st Edition

Languages

Concepts

Data Processing

Author (1):

Dayong Du

Table of Contents (17) Chapters

Apache Hive Essentials

Credits

About the Author

About the Reviewers

www.PacktPub.com

Preface

1. Overview of Big Data and Hive

2. Setting Up the Hive Environment

3. Data Definition and Description

4. Data Selection and Scope

5. Data Manipulation

6. Data Aggregation and Sampling

7. Performance Considerations

8. Extensibility Considerations

9. Security Considerations

10. Working with Other Tools

Index

HCatalog

HCatalog (see https://cwiki.apache.org/confluence/display/Hive/HCatalog) is a metadata management system for Hadoop data. It stores consistent schema information for Hadoop ecosystem tools, such as Pig, Hive, and MapReduce. By default, HCatalog supports data in the format of RCFile, CSV, JSON, SequenceFile, ORC file, and a customized format if InputFormat, OutputFormat, and SerDe are implemented. By using HCatalog, users are able to directly create, edit, and expose (via its REST API) metadata, which becomes effective immediately in all tools sharing the same piece of metadata. At first, HCatalog was a separate Apache project from Hive and was part of Apache Incubator, where most Apache projects first started. Eventually, HCatalog became a part of the Hive project in 2013 starting with Hive 0.11.0.

HCatalog is built on top of the Hive metastore and incorporates support for Hive DDL. It provides read and write interfaces and HCatLoader and HCatStorer, for Pig, by implementing Pig...

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Authors (1)

Dayong Du

Dayong Du has all his career dedicated to enterprise data and analytics for more than 10 years, especially on enterprise use case with open source big data technology, such as Hadoop, Hive, HBase, Spark, etc. Dayong is a big data practitioner as well as author and coach. He has published the 1st and 2nd edition of Apache Hive Essential and coached lots of people who are interested to learn and use big data technology. In addition, he is a seasonal blogger, contributor, and advisor for big data start-ups, co-founder of Toronto big data professional association.

See other products by Dayong Du

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