Book Image

HBase Administration Cookbook

By : Yifeng Jiang
Book Image

HBase Administration Cookbook

By: Yifeng Jiang

Overview of this book

As an Open Source distributed big data store, HBase scales to billions of rows, with millions of columns and sits on top of the clusters of commodity machines. If you are looking for a way to store and access a huge amount of data in real-time, then look no further than HBase.HBase Administration Cookbook provides practical examples and simple step-by-step instructions for you to administrate HBase with ease. The recipes cover a wide range of processes for managing a fully distributed, highly available HBase cluster on the cloud. Working with such a huge amount of data means that an organized and manageable process is key and this book will help you to achieve that.The recipes in this practical cookbook start from setting up a fully distributed HBase cluster and moving data into it. You will learn how to use all of the tools for day-to-day administration tasks as well as for efficiently managing and monitoring the cluster to achieve the best performance possible. Understanding the relationship between Hadoop and HBase will allow you to get the best out of HBase so the book will show you how to set up Hadoop clusters, configure Hadoop to cooperate with HBase, and tune its performance.
Table of Contents (16 chapters)
HBase Administration Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface

Enabling HBase RPC DEBUG-level logging


Hadoop and HBase use the log4j library to write their logs. Logging level is set in the log4j.properties file. In production, the logging level is usually set to the INFO level, which is good for many situations. However, there will be cases where you might want to see the debug information of a particular Hadoop/HBase daemon.

HBase inherits its online logging level change capability from Hadoop. It is possible to change an HBase daemon's logging level from its web UI without restarting the daemon.

This feature is useful when you need to know the debug information of an HBase daemon but cannot restart it. A typical situation is to troubleshoot a production HBase cluster.

We will describe how to enable HBase RPC DEBUG-level logging in this recipe.

Getting ready

Start the HBase cluster and open the HBase web UI from the following URL:

http://<master_host>:60010/master.jsp

How to do it...

The instructions to enable HBase RPC DEBUG-level logging without...