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From Ted Dunning <>
Subject Re: Question about Mesos.
Date Fri, 01 Jul 2011 01:21:14 GMT
Technically speaking, Mesos has a less expressive model for expressing
resource requirements.  The thesis of Mesos is that the negotiation between
application and scheduler can make up for this missing information.  Mesos
was also first to "market", but Hadoop nextGen is catching up fast.  The
MR-279 has code that works, albeit with some issues in production use.  From
all reports, these issues are being resolved quickly as Yahoo's considerable
QA resources come to bear.

Politically speaking, Mesos has a nearly inactive mailing list which, to
outward appearances, indicate a nearly inactive project.  There is some
evidence that considerable activity is occurring off-list, but this is a
process bug in the Apache model since "if it doesn't happen on the list, it
doesn't happen".

On the other side, Hadoop nextGen has the Hadoop community pretty much
behind it.  Since HNG has the potential to breakdown some of the deadlocks
that have plagued the Hadoop community release process, there is
considerable enthusiasm for it.

Combined, these factors make it much more likely that HNG will be the
dominant force in the Hadoop world.  That is, more likely in my own
estimation.  Others may differ.

On Thu, Jun 30, 2011 at 5:16 PM, Edward J. Yoon <>wrote:

> Hi,
> I'm newbie, and wonder what's the main differences between Hadoop
> nextGen and Mesos.
> Thanks.
> --
> Best Regards, Edward J. Yoon
> @eddieyoon

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