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Apache Hive Cookbook

You're reading from   Apache Hive Cookbook

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Product type Paperback
Published in Apr 2016
Publisher Packt
ISBN-13 9781782161080
Length 268 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (14) Chapters Close

Preface 1. Developing Hive FREE CHAPTER 2. Services in Hive 3. Understanding the Hive Data Model 4. Hive Data Definition Language 5. Hive Data Manipulation Language 6. Hive Extensibility Features 7. Joins and Join Optimization 8. Statistics in Hive 9. Functions in Hive 10. Hive Tuning 11. Hive Security 12. Hive Integration with Other Frameworks Index

Enabling transactions in Hive


In this recipe, you will learn how to configure the Hive metastore to enable Atomicity, Consistency, Isolation, Durability (ACID) properties for a Hive table. Insert, Update and Delete are not possible in Hive until the ACID properties are not enabled. Also table must to be Bucketed in Hive if Insert, Update and Delete feature are to be used.

Transactions including inserts, updates, and deletes are available from Hive 1.0.0 and above.

Getting ready

To allow the user to execute transactional commands, the user needs to configure the metastore with transactional tables. The user needs to set the following properties in hive-site.xml:

<configuration>
    <property>
        <name>javax.jdo.option.ConnectionURL</name>
        <value>jdbc:mysql://localhost:3306/hivedb</value>
        <description>metadata is stored in a MySQL server</description>
    </property>
    <property>
        <name>javax.jdo.option...
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