This is the documentation for CDH 4.7.0.
Documentation for other versions is available at Cloudera Documentation.

Upgrading from CDH3 to CDH4

  Note:

If you are using Cloudera Manager to manage CDH, do not use the instructions on this page.

  • If you are running Cloudera Manager 3.x, you must upgrade Cloudera Manager to version 4 first, as Cloudera Manager 3 cannot manage CDH4. Follow directions in the current Cloudera Manager Installation Guide (or the directions in the Installation Guide for the Cloudera Manager 4.x version you are using) to upgrade CDH3 to CDH4 in a Cloudera-managed deployment.
Use the following information and instructions to upgrade to the latest CDH4 release from a CDH3 release.:
  Important: This involves uninstalling the CDH3 packages and installing the CDH4 packages.

If you are upgrading from an earlier CDH4 release, see Upgrading from an Earlier CDH4 Release.