I was using MapR 5.2 and under dists at package.mapr.com for ubuntu it has mapr and then optional. (I am not an expert on apt-get and how it works etc). This allowed me, on a ubuntu:latest containers (with a /etc/os-release of:
VERSION="16.04.1 LTS (Xenial Xerus)"
PRETTY_NAME="Ubuntu 16.04.1 LTS"
To run install in MapR 5.2 I basically added the the packages to MapR
RUN echo "deb http://package.mapr.com/releases/v5.2.0/ubuntu/ mapr optional" > /etc/apt/sources.list.d/mapr.list
RUN echo "deb http://package.mapr.com/releases/ecosystem-5.x/ubuntu binary/" >> /etc/apt/sources.list.d/mapr.list
apt-get update, and apt-get install.
Now with MapR 5.2.1, I am only allowed to install to trusty? (That's what I think I am seeing)
When I do the same with my setup, when I run apt-get update I get
W: The repository 'http://package.mapr.com/releases/v5.2.1/ubuntu mapr Release' does not have a Release file.
W: The repository 'http://package.mapr.com/releases/MEP/MEP-3.0/ubuntu binary/ Release' does not have a Release file.
E: Failed to fetch http://package.mapr.com/releases/v5.2.1/ubuntu/dists/mapr/optional/binary-amd64/Packages 404 Not Found [IP: 18.104.22.168 80]
E: Failed to fetch http://package.mapr.com/releases/MEP/MEP-3.0/ubuntu/binary/Packages 404 Not Found [IP: 22.214.171.124 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
I guess I am surprised that I could install MapR 5.2 on ubuntu:latest (xenial) (16.04) but now with MapR 5.2.1 I am limited only to ubuntu trusty (14.04) . FYI, Ubuntu 16.04 was released over a year ago. (Obviously this is using the apt-get methods, if I were to work with the deb files, I could probably get it installed, but that is a lot of coordination I need to do, hence, why apt-get is so nice!)