[TACHYON-62] Netty

Netty implementation of the data server.

This patch is not done yet.  Its intent is to show the work I have right now for commenting.

This PR should not be merged until performance results come in.
Will update
On Aug 20, 2014 12:10 AM, "Reynold Xin" <notifications@github.com> wrote:

> In core/pom.xml:
>
> > @@ -38,6 +38,11 @@
> >        <scope>compile</scope>
> >      </dependency>
> >      <dependency>
> > +      <groupId>io.netty</groupId>
> > +      <artifactId>netty-all</artifactId>
> > +      <version>4.0.22.Final</version>
>
> 4.0.23 is out now ... with some critical bug fix
>
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> <https://github.com/amplab/tachyon/pull/333/files#r16461472>.
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