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

Mounting disks with noatime and nodiratime


If you are mounting disks purely for Hadoop and you use ext3 or ext4, or the XFS file system, we recommend that you mount the disks with the noatime and nodiratime attributes.

If you mount the disks as noatime, the access timestamps are not updated when a file is read on the filesystem. In the case of the nodiratime attribute, mounting disks does not update the directory inode access times on the filesystem. As there is no more disk I/O for updating the access timestamps, this speeds up filesystem reads.

In this recipe, we will describe why the noatime and nodiratime options are recommended for Hadoop, and how to mount disks with noatime and nodiratime.

Getting ready

You will need root privileges on your slave nodes. We assume you have two disks for only Hadoop—/dev/xvdc and /dev/xvdd. The two disks are mounted at /mnt/is1 and /mnt/is2, respectively. Also, we assume you are using the ext3 filesystem.

How to do it...

To mount disks with noatime and...