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Learning Hbase

You're reading from   Learning Hbase Learn the fundamentals of HBase administration and development with the help of real-time scenarios

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Product type Paperback
Published in Nov 2014
Publisher
ISBN-13 9781783985944
Length 326 pages
Edition 1st Edition
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Author (1):
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Shashwat Shriparv Shashwat Shriparv
Author Profile Icon Shashwat Shriparv
Shashwat Shriparv
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Table of Contents (12) Chapters Close

Preface 1. Understanding the HBase Ecosystem FREE CHAPTER 2. Let's Begin with HBase 3. Let's Start Building It 4. Optimizing the HBase/Hadoop Cluster 5. The Storage, Structure Layout, and Data Model of HBase 6. HBase Cluster Maintenance and Troubleshooting 7. Scripting in HBase 8. Coding HBase in Java 9. Advance Coding in Java for HBase 10. HBase Use Cases Index

HBase node management


In this section, we will discuss adding (commissioning) and removing (decommissioning) nodes from an HBase cluster.

Commissioning

Let's discuss the commissioning of nodes in an HBase cluster.

Prepare the machine, check the permissions twice, and check the connectivity, host entry, and host resolution. Once done and twice checked, copy the configuration file following the same path structure at the new machine, and start RegionServer using the following command:

hbase-daemon.sh start regionserver

Once this command is executed, RegionServer will automatically register with HMaster and start receiving local data. At the beginning, the newly added node will not have any data, and if balancer is not disabled, it will start moving new regions to the new RegionServer.

If the start and stop process is done using ssh and HBase script, add the newly added node host name to the conf/regionservers file.

So, commissioning is just like checking the new machine, copying the configuration...

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