It is possible to do a rolling upgrade from 1.8.1 to 1.9.2 -- no need to shut down the whole cluster. The 1.9 series is effectively a continuation of the 1.8 line, however some client methods were deprecated which caused it to be a 1.9 release per the laws of semantic versioning. If your code is using the deprecated ClientConfiguration constructors, you'll need to update to use the new static methods before upgrading to Accumulo 2.x. See release notes regarding the deprecated code here: https://accumulo.apache.org/release/accumulo-1.9.0/#deprecated-clientconfiguration-api-using-commons-config
Cheers, --Adam On Mon, Mar 18, 2019 at 2:23 PM Thomas Adam <ta...@ccri.com> wrote: > Hi, > > I was wondering if it is possible to do a rolling upgrade of Accumulo > from 1.8.1 to 1.9.2. It says that 1.9.x adds additional API calls and > bug fixes, so I wasn't sure if I need to shut down the whole cluster to > do the upgrade and it doesn't seem to mention this upgrade in the > documentation online. > > Thank you for your time, > > Thomas > >
