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From David Medinets <>
Subject Re: Upgrading from 1.4.2 to 1.4.5
Date Sat, 02 Aug 2014 00:22:56 GMT
Don't forget to backup!

On Fri, Aug 1, 2014 at 3:11 PM, Terry P. <> wrote:
> Greetings all,
> Accumulo 1.4.2 has been serving us decently well now that the ISP our
> virtual machines reside on has finally stabilized for the most part.  I say
> "decently well" because one of the biggest issues we saw was when Zookeeper
> connectivity was lost -- things went south pretty quickly whenever that
> happened, and I now believe we have been hitting some of the Zookeeper
> related bugs that exist in 1.4.2.
> We're now tasked with doing whatever we can to insulate against stability
> issues on the part of our ISP, and I see that going from 1.4.2 to 1.4.5 will
> fix 2 Critical and 3 Major bugs related to Zookeeper connectivity.
> I've downloaded 1.4.5 and have gone through the tarfile. I've read both the
> CHANGES and README files, but neither mention "upgrading", nor does the User
> Manual PDF dated March 31, 2014.
> I assume that what I need to do is:
> 1. shutdown all of Accumulo
> 2. move the accumulo directory to accumulo-1.4.2 or similar
> 3. lay down the new 1.4.5 accumulo directory
> 4. apply edits for Hadoop location, Java, memory sizing, etc. to
> and accumulo-site.xml specific to your installation
> 5. start Accumulo.
> I'd like to be sure there is nothing else I need to do before I embark on
> updating our first environment.
> I see has some changes, but they look like quick and easy
> edits to define the paths for Hadoop and Java etc., so no worries there.
> I'll check accumulo-site.xml more later, but want to get this in front of
> the experts first to see what else I need to consider for an upgrade.
> Many thanks in advance to all for your insights,
> Terry

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