Book Image

Apache Hive Cookbook

Book Image

Apache Hive Cookbook

Overview of this book

Hive was developed by Facebook and later open sourced in Apache community. Hive provides SQL like interface to run queries on Big Data frameworks. Hive provides SQL like syntax also called as HiveQL that includes all SQL capabilities like analytical functions which are the need of the hour in today’s Big Data world. This book provides you easy installation steps with different types of metastores supported by Hive. This book has simple and easy to learn recipes for configuring Hive clients and services. You would also learn different Hive optimizations including Partitions and Bucketing. The book also covers the source code explanation of latest Hive version. Hive Query Language is being used by other frameworks including spark. Towards the end you will cover integration of Hive with these frameworks.
Table of Contents (19 chapters)
Apache Hive Cookbook
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Changing configurations at runtime


Let's see how we can change various configuration settings at runtime.

How to do it...

Follow these steps to change any of the Hive configuration properties at runtime for a particular session or query:

  1. Configuration for Hive and underlying MapReduce could be changed at runtime through beeline or the CLI. The general syntax to set a property is as follows:

    SET key=value;
    
  2. The configuration set is only applicable for that session. If you want to set it permanently, then you need to set it in Hive-site.xml. The examples are as follows:

    beeline> SET mapred.job.tracker=example.host.com:50030;
    Hive> SET Hive.exec.mode.local.auto=false;