In the root of the oozie repo, we have a DISCLAIMER.txt with this:
Apache Oozie is an effort undergoing incubation at the Apache Software
Foundation (ASF), sponsored by the Apache Incubator PMC.
Incubation is required of all newly accepted projects until a further review
indicates that the infrastructure, communications, and decision-making process
have stabilized in a manner consistent with other successful ASF projects.
While incubation status is not necessarily a reflection of the completeness
or stability of the code, it does indicate that the project has yet to be
fully endorsed by the ASF.
For more information about the incubation status of the Oozie project you
can go to the following page:
We've been long out of incubation so this can be deleted. I'm not sure if something else is supposed to go here now instead; though Hadoop doesn't even have this file, so it's probably same to just delete it.