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

Configuring HiveServer2 high availability


HiveServer2 for a cluster of thousands of nodes could be a single point of failure if HiveServer2 is not configured with a high availability concept. If HiveServer2 service goes down, none of the clients would be able to access metastore or submit Hive queries to cluster. To solve this limitation, high availability of HiveServer2 is configured. It needs a ZooKeeper quorum running on a set of nodes.

ZooKeeper is an open source centralized service for providing coordination between distributed applications. It is also used to store some common configuration and metadata to provide distributed synchronization. Hive uses ZooKeeper to store configuration information to provide high availability of HiveServer2.

Getting ready

For configuring high availability of HiveServer2, you will need a ZooKeeper quorum running.

Tip

The installation of ZooKeeper is not in the scope of this book. You can refer to the following links for the installation of ZooKeeper.

  • Refer...