I don't think maintenance releases get released as such with CDH for any component, since the release cycle and customer demand for maintenance releases are different from upstream. Important fixes are backported though, so you already have some of 1.3.1 and beyond in the 1.3.x branch in CDH. The changes aren't different; they come from upstream. Minor releases rebase on upstream minor releases and so 'sync' at that point (i.e. CDH 5.5 should have the latest minor release, whether it's 1.4.x or 1.5.x) ... View more