Adam,

Great! Thank you for the quick response and useful information.

Thomas 

> On Mar 18, 2019, at 19:31, Adam J. Shook <adamjsh...@gmail.com> wrote:
> 
> 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
>> 

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