Upgrading from HDP 2.3.x to HDP 2.3.4

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	Important
	Hortonworks strongly recommends that all users running HDP 2.3.4 upgrade to HDP 2.3.4.7.

HDP 2.3.4 is a feature-bearing maintenance release of HDP 2.3.x; it includes changes to HDP 2.3.x beyond a standard maintenance release. For full instructions on how to upgrade your cluster from HDP 2.3.x to HDP 2.3.4, use the Non-Ambari Cluster Upgrade Guide.

Keeping the same configuration files you used for HDP 2.3.x
Keeping the same data and metadata in the same location you used for HDP 2.3.x
Installing any new components (added for the first time in HDP 2.3.4) side-by-side with existing components

The following table summarizes HDP 2.2.x-to-2.3.4 upgrade options:

Cluster Management

Supporting Doc

Notes

Cluster managed manually (HDP 2.1 and earlier)

Manual Upgrade Guide

If you have an earlier version of HDP (such as HDP 2.0 or HDP 2.1), see the HDP 2.3.4 Manual Upgrade Guide.

Important changes to:

Cluster managed manually (HDP 2.2 and later)

Before you begin

Important changes to:

Cluster managed via Ambari 1.7.0

Before you begin

Cluster managed via Ambari 2.0

Upgrading Ambari Guide

Ambari 2.0 supports rolling upgrade between HDP 2.2.x and HDP 2.3.4.

	Note
	Ambari does not support rolling upgrade between HDP 2.1 and 2.3 for Falcon. Use Configure and Validate Falcon to upgrade this component.

When upgrading to HDP 2.3.4 using Ambari, Spark 1.4.1 will be automatically upgraded to 1.5.2. If you wish to return to using 1.4.1, use the Spark Manual Downgrade Procedure.

Cluster managed via Ambari 2.1

Upgrading Ambari Guide

Ambari 2.1 supports rolling upgrade between HDP 2.3.x and HDP 2.3.4.

	Note
	Ambari does not support rolling upgrade between HDP 2.1 and 2.3 for Falcon. Use Configure and Validate Falcon to upgrade this component.

When upgrading to HDP 2.3.4 using Ambari, Spark 1.4.1 will be automatically upgraded to 1.5.2. If you wish to return to using 1.4.1, use the Spark Manual Downgrade Procedure.

Cluster managed via Ambari 2.2

Upgrading Ambari Guide

Ambari 2.2 supports rolling upgrade between HDP 2.3.x and HDP 2.3.4.

	Note
	Ambari does not support rolling upgrade between HDP 2.1 and 2.3 for Falcon. Use Configure and Validate Falcon to upgrade this component.

When upgrading to HDP 2.3.4 using Ambari, Spark 1.4.1 will be automatically upgraded to 1.5.2. If you wish to return to using 1.4.1, use the Spark Manual Downgrade Procedure.

​Upgrading from HDP 2.3.x to HDP 2.3.4