Administration Guide for Highly Available NameNode
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Hortonworks Manuals
Hortonworks Data Platform - 1.0
Administration Guide for Highly Available NameNode
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Contents
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1. High Availability for Hadoop
2. High Availability for HDFS NameNode Using VMware
Use Cases and Fail Over Scenarios
Use Cases
Fail over scenarios
Supported Operating Systems
Configuration For Physical Servers
Software Configuration
Configure a vSphere HA cluster
Configure vSphere cluster using vSphere Management Console
Configure shared storage
Install HDP
Configure NameNode for automatic fail over
Install and configure vSphere Monitoring Agent
Configure the NameNode to start automatically on OS boot
Validate autostart configuration for NameNode and the NameNode monitoring agent
Enable vSphere for HA
Validate NameNode High Availability
Install and configure HAM
Invoke HAM application
Validate the fail over behavior
Verify that NameNode failure triggers the fail over
Verify that a hung NameNode triggers the fail over
Verify that ESXi server failure triggers the fail over
Verify that no fail over is triggered on planned shutdown of the monitor service
Verify that the monitor provides a bootstrap period before reporting that the NameNode is not live
Verify that no fail over is triggered when the NameNode enters the safe mode
Administration Guide for Highly Available NameNode
NameNode shutdown for planned maintenance
Starting the NameNode
Reconfiguring HDFS
Tuning parameters for your environment
Tuning parameters for your environment
Tuning the reporting rate
Tuning the probing rate
Tuning for NameNode Garbage Collection
References
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