+1, sounds cool to me! Cheers, Chris
On Dec 13, 2010, at 2:08 PM, Matei Zaharia wrote: > We would like to propose Mesos as an incubator proposal. > > Mesos is a resource manager for clusters that provides resource sharing and > isolation across distributed applications like Apache Hadoop, MPI, or web > applications. It started as a research project at UC Berkeley, but is now > being used both by other Berkeley groups and at Twitter. We open sourced > Mesos in August and would like to grow a broader community around it. > > Our proposal is included below and available on the wiki at > http://wiki.apache.org/incubator/MesosProposal. We look forward to hearing > feedback and questions on the proposal. Also, let us know if you're > interested in being a mentor. > > Thanks, > > Matei Zaharia, Benjamin Hindman, Andy Konwinski, and Ali Ghodsi > > > > = Abstract = > > Mesos is a cluster manager that provides resource sharing and > isolation across cluster applications. > > > > = Proposal = > > Mesos is system for sharing resources between cluster applications such > as Hadoop MapReduce, HBase, MPI, and web applications. > It is motivated by three use cases. First, organizations that use > several of these applications can use Mesos to share nodes between them, > increasing utilization and simplifying management. Second, inspired by > MapReduce, a wide array of new cluster programming frameworks are being > proposed, such as Apache Hama, Microsoft Dryad, and Google's Pregel and > Caffeine. Mesos provides a common interface for such frameworks to share > resources, allowing organizations to use multiple frameworks in the same > cluster. Third, Mesos allows users of a framework such as Hadoop to have > multiple instances of the framework on the same cluster, facilitating > workload isolation and incremental deployment of upgrades. > > > > = Background = > > Mesos was inspired by operational issues experienced in large Apache Hadoop > deployments as well as a desire to provide a management system for a > wider range of cluster applications. The Apache Hadoop community has long > realized that the current model of having one instance of MapReduce > control a whole cluster leads to problems with isolation (one job may > cause the master to crash, killing all the other jobs), scalability, > and software upgrades (an upgrade must be deployed on the whole cluster). > Statically partitioning resources into multiple fixed-size MapReduce clusters > is unattractive because it lowers both utilization and data locality. > The community has discussed a two-level scheduling model where a simple, > robust low-level layer enables multiple applications to launch tasks > (https://issues.apache.org/jira/browse/MAPREDUCE-279). Mesos is such a layer, > with the additional goal of supporting non-Hadoop applications as well. > > Mesos started as a research project at UC Berkeley, but is now being > tested at several companies (including Twitter and Facebook), and has > attracted > interest from other industry users and researchers as well. We are > therefore proposing to place Mesos in the Apache incubator and build an > open source community around it. > > > > = Rationale = > > Although a variety of cluster schedulers (e.g. Torque, Sun Grid Engine) > already exist in the scientific computing community, they are not well > suited for today's data center environment. > These schedulers generally give jobs coarse-grained static allocations of > the cluster (e.g. X nodes for the full duration of the job). > This is problematic because many cluster applications are elastic > (can scale up and down), so utilization is not optimal under static > partitioning, and because data-intensive applications such as MapReduce > need to run a few tasks on every node of the cluster to read data locally. > To address these challenges, Mesos is designed around two principles: > > * Fine-grained sharing: Mesos allocates resources at the level of "tasks" > within a job, allowing applications to scale up and down over time and > to take turns accessing data on cluster nodes. > * Application-controlled scheduling: Applications control which nodes > their tasks run on, allowing them to achieve placement goals such as > data locality. > > In addition to these principles, Mesos is designed to be simple, scalable > and robust, becuase a cluster manager must be highly available to support > applications and should not become a bottleneck. Application-controlled > scheduling already simplifies our design by pushing much of the complex > logic of tracking job state to applications. In addition, Mesos employs an > optimized C++ message-passing library to achieve scalability and supports > master failover using Apache ZooKeeper. > > Mesos already supports running Hadoop and MPI. We plan to add support > for other systems as requested (and contributed) by the community. > > > > = Current Status = > > == Meritocracy == > > Our intent with this incubator proposal is to start building a diverse > developer community around Mesos following the Apache meritocracy model. > We have wanted to make the project open source and encourage contributors > from multiple organizations from the start. We plan to provide plenty > of support to new developers and to quickly recruit those who make solid > contributions to committer status. > > == Community == > > Mesos is currently being used by developers at Twitter and researchers in > computer science and civil engineering at Berkeley. We hope to extend the user > and developer base further in the future. The current developers and users > are all interested in building a solid open source community around Mesos. > > To work towards an open source community, we have been using the GitHub issue > tracker and mailing lists at Berkeley for development discussions within our > group for several months now. > > == Core Developers == > > Mesos was started by three graduate students at UC Berkeley (Benjamin Hindman, > Andy Konwinski and Matei Zaharia), who were soon joined by a postdoc from > the Swedish Institute of Computer Science (Ali Ghodsi). Although started as > a research project, Mesos was always intended to solve operational issues > with large clusters and to become an open-source project, building on our > successful experience doing research that has been incorporated into Apache > Hadoop > (several scheduling algorithms). > > == Alignment == > > The ASF is a natural host for Mesos given that it is already the home of > Hadoop, HBase, Cassandra, and other emerging cloud software projects. > Mesos was designed to support Hadoop from the beginning in order to solve > operational challenges in Hadoop clusters, and it aims to support a wide range > of applications beyond Hadoop as well. Mesos complements the existing Apache > cloud computing projects by providing a unified way to manage these systems > and to share resources and data between them. > > > > = Known Risks = > > == Orphaned Products == > > With the current core developers of Mesos being graduate students, there > is a risk that these developers will eventually move on to other projects. > However, because of the broad scope of Mesos, we all plan to continue working > on projects related to it in the next several years. We are also actively > working with developers at other organizations, such as Twitter, who are > good candidates to become contributors. > > == Inexperience with Open Source == > > All of the core developers are active users and followers of open source. > Matei Zaharia is a Hadoop committer and has experience with the Apache > infrastructure and development process. Andy Konwinski has contributed > patches to Hadoop through the Apache infrastructure as well. Ali Ghodsi > has released open source software as part of his PhD work that was adopted > by a Swedish company. > > == Homogeneous Developers == > > The current core developers are all researchers (graduate students and a > young professor). However, we hope to establish a developer community > that includes contributors from several corporations, and we are already > working towards this with Twitter and Facebook. > > == Reliance on Salaried Developers == > > Given that the project started in an academic research environment, the > core developers are all interested in it primarily for its own sake rather > than for the sake of employment. We all intend to continue working on Mesos > as volunteers. > > == Relationships with Other Apache Products == > > Mesos needs to work well with Hadoop, HBase, and other cloud software > projects. Being hosted on the same infrastructure will facilitate this > and ultimately help out both Mesos and the projects that can now be > managed using it. There is, however, a risk that new projects will be built > to run solely on Mesos, introducing a dependency. > > == An Excessive Fascination with the Apache Brand == > > While we respect the reputation of the Apache brand and have no doubts that > it will attract contributors and users, our interest is primarily to give > Mesos a solid home as an open source project following an established > development model. Locating the project in Apache will also facilitate > collaboration with Hadoop, HBase, and other Apache cluster computing projects, > as discussed in the Alignment section. > > > > = Documentation = > > Information about Mesos can be found at http://mesos.berkeley.edu. > The following sources may be useful to start with: > > * Documentation for GitHub release: http://github.com/mesos/mesos/wiki > * Presentation at Hadoop User Group: > http://www.cs.berkeley.edu/~matei/talks/2010/hug_mesos.pdf > * Tech report on system design and current features: > http://mesos.berkeley.edu/mesos_tech_report.pdf (paper to appear at NSDI 2011 > conference) > > > > = Initial Source = > > Mesos has been under development since spring 2009 by a team of graduate > students and researchers. It is currently hosted on GitHub under a BSD > license at http://github.com/mesos/mesos. > > > > = External Dependencies = > > The dependencies all have Apache compatible licenses, including BSD, MIT, > Boost, and Apache 2.0. > > > > = Cryptography = > > Not applicable. > > > > = Required Resources = > > == Mailing Lists == > > * mesos-private for private PMC discussions (with moderated subscriptions) > * mesos-dev > * mesos-commits > * mesos-user > > > > == Subversion Directory == > > https://svn.apache.org/repos/asf/incubator/mesos > > > > == Issue Tracking == > > JIRA Mesos (MESOS) > > > > == Other Resources == > > The existing code already has unit tests, so we would like a Hudson instance > to run them whenever a new patch is submitted. This can be added after > project > creation. > > > > = Initial Committers = > > * Ali Ghodsi (ali at sics dot se) > * Benjamin Hindman (benh at eecs dot berkeley dot edu) > * Andy Konwinski (andyk at eecs dot berkeley dot edu) > * Matei Zaharia (matei at apache dot org) > > A CLA is already on file for Matei Zaharia. > > > = Affiliations = > > * Ali Ghodsi (UC Berkeley / Swedish Institute of Computer Science) > * Benjamin Hindman (UC Berkeley) > * Andy Konwinski (UC Berkeley) > * Matei Zaharia (UC Berkeley) > > > > = Sponsors = > > == Champion == > > Tom White > > == Nominated Mentors == > > * Dhruba Borthakur > * Brian McCallister > * Tom White > > == Sponsoring Entity == > > Incubator PMC > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: general-unsubscr...@incubator.apache.org > For additional commands, e-mail: general-h...@incubator.apache.org > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Chris Mattmann, Ph.D. Senior Computer Scientist NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA Office: 171-266B, Mailstop: 171-246 Email: chris.a.mattm...@nasa.gov WWW: http://sunset.usc.edu/~mattmann/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Adjunct Assistant Professor, Computer Science Department University of Southern California, Los Angeles, CA 90089 USA ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ --------------------------------------------------------------------- To unsubscribe, e-mail: general-unsubscr...@incubator.apache.org For additional commands, e-mail: general-h...@incubator.apache.org
