Read the Informatica Release Notes for updates to the installation and upgrade process.
Verify system requirements:
Verify the Hadoop distribution.
Verify sizing requirements based upon your processing and concurrency requirements.
Review the patch requirements to verify that the machine has the required operating system patches and libraries.
Verify that the port numbers to use for application service processes are available on the machines where you install the Informatica services.
Verify that the operating system meets the file descriptor limit.
Back up the Data Transformation files that were created in a previous installation.
Review system environment variables.
Create a system user account to run the installer.
Set up keystore and truststore files if you want to configure secure communication for the domain and set up a secure connection to web client applications.
Extract the installer files.
Verify the license key.