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From Jared Winick <>
Subject Re: Accumulo init over existing instance
Date Tue, 08 Oct 2013 21:58:44 GMT
In my experience, you need to remove the accumulo directory in HDFS (hadoop
fs -rmr /accumulo) before "accumulo init" will allow you to proceed. That
is all you should have to do.


On Tue, Oct 8, 2013 at 3:32 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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