Dependency Hell: STORM 0.9.2 and Cassandra 2.0

[Gary Zhao <ga...@gmail.com>]

Hello

Anyone encountered the following issue and any workaround? Our Storm
topology was written in Clojure.

----------------------------------------
Our team is upgrading one of our storm topology from using cassandra 1.2 to
cassandra 2.0, and we have found one problem that is difficult to tackle.
Cassandra 2.0Java driver requires google guava 1.6. Unfortuanately, storm
0.9.2 provides a lower version. Because of that, a topology will not be
able to contact Cassandra databases.

Thanks
Gary

Re: Dependency Hell: STORM 0.9.2 and Cassandra 2.0

[Ben Bromhead <be...@instaclustr.com>]

I haven't had to deal with this problem specifically and don't know if
there is a storm specific solution, but the general Java way of dealing
with projects who have conflicting dependencies would be to either exclude
one of the conflicting dependencies using maven and see if it works,
otherwise rename the conflicting dependency using
http://maven.apache.org/plugins/maven-dependency-plugin/usage.html so both
projects can use there own versions of guava without the package names
conflicting (and the jvm will load the correct classes for each dep).

On 25 October 2014 06:13, Gary Zhao <ga...@gmail.com> wrote:

> Hello
>
> Anyone encountered the following issue and any workaround? Our Storm
> topology was written in Clojure.
>
> ----------------------------------------
> Our team is upgrading one of our storm topology from using cassandra 1.2
> to cassandra 2.0, and we have found one problem that is difficult to
> tackle. Cassandra 2.0Java driver requires google guava 1.6. Unfortuanately,
> storm 0.9.2 provides a lower version. Because of that, a topology will not
> be able to contact Cassandra databases.
>
> Thanks
> Gary
>



-- 

Ben Bromhead

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