The jira has more details and an architecture doc attached.
On 8/1/11 2:12 AM, "Dieter Plaetinck" <[EMAIL PROTECTED]>
> On Thu, 28 Jul 2011 06:13:01 -0700
> Thomas Graves <[EMAIL PROTECTED]> wrote:
>> Its currently still on the MR279 branch -
>> http://svn.apache.org/viewvc/hadoop/common/branches/MR-279/. It is
>> planned to be merged to trunk soon.
>> On 7/28/11 7:31 AM, "real great.." <[EMAIL PROTECTED]>
>>> In which Hadoop version is next gen introduced?
> what exactly is contained within this "next generation" mysterious
> sounding "MRV2"? What's it about?