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From Josh Elser <>
Subject Re: Accumulo ProxyInstance available
Date Thu, 03 Sep 2015 15:35:35 GMT
This is cool stuff, Dennis. Thanks for sharing!

I think this would be great to link to from the website. Do you mind if 
I add it? We have a small list of projects now at I'm thinking this deserves to be 
broken out into its own page.

Patrone, Dennis S. wrote:
> I just wanted to let folks know about the availability of a new project
> called 'Accumulo ProxyInstance'. It is a Java Instance
> implementationthat communicates with an Accumulo cluster via the Thrift
> proxy server.
> Basically, we have an isolated Accumulo cluster only accessible to the
> rest of the network through a single, dual-homed gatekeeper machine. We
> started the Thrift proxy server on the gatekeeper. We then created this
> Instance implementation to allow developers to access the cluster from
> their development machines through the gatekeeper/proxy but still using
> the traditional Java Instance APIs. This encapsulates a majority of the
> client code from needing to know if it is running on the cluster or
> connecting through the proxy server (with the notable exception of the
> actual Instance instantiation).
> Now for convenience we can test, debug, and perform smaller queries
> using the ProxyInstance on our development machines through the proxy
> server. When performance demands it, we can simply change 1 line of code
> to instantiate a ZooKeeperInstance instead, move the code to the
> isolated subnet, and communicate directly with the tablet servers using
> the traditional Java client library.
> You can read more about the project here:
> code is available on github
> ( and the JAR is on
> maven central
> (|edu.jhuapl.accumulo|proxy-instance|1.0.0|jar).
> It was developed and tested against Accumulo 1.6.2.
> We’ve found it useful in our development environment given our isolated
> Accumulo cluster; perhaps others who have a similar setup might also
> find utility in it as well.
> Thanks,
> Dennis

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