It has to be reproducible only on Liberty and earlier versions. The root cause is that MapR plugin creates mapr user after oozie instalation. After Liberty release mapr-oozie-4.2 was released and in 4.2 they changed the instalation process that it requires mapr user to be created before oozie install, they also backported this change into mapr-oozie 4.1, so it broke the configuration. This is not the only issue that comes from backporing changes into old version of mapr-ecosystem. In hive 1.0 they changed property name, so, most likely, hive is broken too.
It has to be reproducible only on Liberty and earlier versions. The root cause is that MapR plugin creates mapr user after oozie instalation. After Liberty release mapr-oozie-4.2 was released and in 4.2 they changed the instalation process that it requires mapr user to be created before oozie install, they also backported this change into mapr-oozie 4.1, so it broke the configuration. This is not the only issue that comes from backporing changes into old version of mapr-ecosystem. In hive 1.0 they changed property name, so, most likely, hive is broken too.