Folks, as heads-up, we are planning to convert the format of the MasterInfo information stored in ZooKeeper from the Protocol Buffer binary format to JSON - this is in conjunction with the HTTP API development, to allow frameworks *not* to depend on libmesos and other binary dependencies to interact with Mesos Master nodes.
*NOTE* - there is no change in 0.23 (so any Master/Slave/Framework that is currently working in 0.22 *will continue to work* in 0.23 too) but as of Mesos 0.24, frameworks and other clients relying on the binary format will break. The details of the design are in this Google Doc: https://docs.google.com/document/d/1i2pWJaIjnFYhuR-000NG-AC1rFKKrRh3Wn47Y2G6lRE/edit the actual work is detailed in MESOS-2340: https://issues.apache.org/jira/browse/MESOS-2340 and the patch (and associated test) are here: https://reviews.apache.org/r/35571/ https://reviews.apache.org/r/35815/ *Marco Massenzio* *Distributed Systems Engineer*