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From Josh Elser <>
Subject Re: New accumulo instance with existed HDFS cluster
Date Wed, 05 Apr 2017 14:50:28 GMT
Lee -- it sounds like you want to take the data from an old Accumulo
cluster, install Accumulo on a new set of nodes, and then start the
new instance of Accumulo against the old installation?

If that's the case, this should be very painless. Just make sure that
the old instance is completely shut down before starting up the new
instance. Hostnames nor IPs should matter on your new nodes.
Functionally, Accumulo wouldn't know the difference between you adding
a few new TabletServers or adding N new TabletServers (as you're doing

On Wed, Apr 5, 2017 at 8:56 AM, Michael Wall <> wrote:
> Lee,
> Can you give us a little more details about what you are trying to do?  Are
> you installing Accumulo for the first time or do you have an existing
> Accumulo that you are trying to use?  What version of Accumulo are you
> using?
> If you are trying to get Accumulo running for the first time with an
> existing HDFS cluster, you just need to run the 'init' command and a
> /accumulo directory will be created and used in HDFS.  See
> If there is existing data in HDFS, you will need come up with strategy to
> ingest it into Accumulo.
> If you have an existing Accumulo instance that you are trying to upgrade,
> give us version information and we can point you to the some upgrade info.
> Mike
> On Wed, Apr 5, 2017 at 5:14 AM Lee <> wrote:
>> Hi, all:
>> I try to install the accumulo cluster with some new linux box, and the
>> HDFS cluster  is ok and will not be replaced.
>> The new accumulo cluster scale is same, but ip will be changed. So, how to
>> make the new accumulo use data in HDFS?
>> I think the hostnames must same.  But I have no idea.
>>  Is it all?
>> Thanks

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