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From John Vines <>
Subject Re: Accumulo init over existing instance
Date Tue, 08 Oct 2013 22:07:30 GMT
Like Jared said, wiping /accumulo out of hdfs is all you need to do.

But Accumulo still uses IP addresses internally, so I'm not quite certain
you're going to achieve what you set out for.

On Tue, Oct 8, 2013 at 5:32 PM, Terry P. <> wrote:

> So reverse DNS wasn't working when I deployed my new cluster, thus all my
> Tablet Servers were showing up in the Monitor as IP addresses (even though
> all configuration files had hostnames only).  Lesson learned: trust, but
> verify (and ensure your hardened base servers still have nslookup and/or
> dig on them).
> Now that DNS is fixed, I want to wipe everything clean and re-init
> Accumulo to ensure everything is legit using hostnames to ensure the
> cluster is not tied to IP addresses.
> I know I need to do a new 'accumulo init' -- I'll pass in the same
> instance name, and my understanding is that will overwrite everything
> currently in Zookeeper.
> My question is: is there anything else I could/should do first to "clean
> up" from this botched instance?  E.g. should I delete all files in HDFS,
> the write-ahead logs on the Tablet Servers, etc.?  I'm running Accumulo
> 1.4.2.
> Thanks,
> Terry

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