In HDP 2.2.6, behavioral changes affect the following Hadoop components:
Oozie
Previous releases of the HDP Oozie client loaded the server-side configuration file, where JAVA_HOME is specific. The current version of the client does not load that server-side file. The workaround requires the following changes in its environmental setup:
The Oozie system environment requires JDK 1.6 or greater
The machine where the users will run the Oozie command line requires $JAVA_HOME to be set to version 1.6 or greater.