Hi Gary.
I am currently using
Mesos 0.16.0 build for Protobufs 2.5.0
(https://github.com/Guavus/mesos/tree/releases/0.16.0-HDP2x)
Hadoop version 2.2
Spark 0.9.0 
(https://github.com/guavus/incubator-spark/tree/guavus/branch-0.9-hdp2.2)

Things to know.
Hadoop 1.0.4 uses protobufs 2.4.1
Hadoop 2.2 and 2.3 uses protobufs 2.5.0
Mesos < 0.17.0 uses protobufs 2.4.1
Mesos >= 0.17.0 uses protobufs 2.5.0

If you need Mesos 0.15.0 on protobufs 2.5.0 you could try to backport
https://github.com/Guavus/mesos/tree/releases/0.16.0-HDP2x but if you
keep CDH4 with protobufs 2.4.1 you will run into trouble.

Let me know if this help.
Bernardo.




On Tue, Mar 25, 2014 at 4:57 PM, Gary Malouf <[email protected]> wrote:
> For various reasons, our team needs to keep all of our projects on the same
> protobuf version.  We've now hit a point where we need to upgrade protobuf
> from 2.4.1 to 2.5.0 across the board in our projects and dependent
> platforms.
>
> *Current stack*: Mesos 0.15, Chronos, CDH 4.2.1-MRV1, Spark
> 0.9-pre-scala-2.10 build off master
>
> *Ideal stack after upgrade*: Mesos 0.17, Chronos, CDH5 beta2, Spark 0.9.1
> (hadoop 2.2 build)
>
> From what we understand, we need a dependency on Hadoop 2.2 to get the
> necessary protobuf upgrade.  From reading Cloudera's documentation and
> multiple google searches, it is not clear to me how we can construct the
> stack to continue to work.
>
> Has anyone else requested info on getting this combination to work?  From
> others we've spoken to, they've basically said that we'll be forced to use
> Yarn for Hadoop support in the very near future anyway so we should switch.
>  Since we colocate Spark with out HDFS nodes, it's hard to see how we would
> run both Yarn and Mesos on the same servers.

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