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From Ian Holsman <>
Subject Re: [PROPOSAL] OODT: a grid middleware framework for science data processing, information integration, and retrieval
Date Mon, 04 Jan 2010 21:11:20 GMT
+1 and I'd love to volunteer to be a mentor.

On 1/5/10 6:46 AM, Justin Erenkrantz wrote:
> Hi general@,
> On behalf of the OODT community, I'd like to bring the following
> proposal for discussion within the Incubator.  I've talked with Chris
> and Dave about bringing this project to Apache since May of 2007 (ICSE
> in Minneapolis at the Ruth's Chris Steak house!) - so I'm very happy
> to see this proposal arrive and be a mentor for it.
> Comments/suggestions/mentor volunteers welcome.
> Thanks!  -- justin
> --- Current Wiki Text below ---
> OODT, a grid middleware framework for science data processing,
> information integration, and retrieval.
> Abstract
> OODT is a grid middleware framework used on a number of successful
> projects at NASA's Jet Propulsion Laboratory/California Institute of
> Technology, and many other research institutions and universities,
> specifically those part of the:
>      * National Cancer Institute's (NCI's) Early Detection Research
> Network (EDRN) project - over 40+ institutions all performing research
> into discovering biomarkers which are early indicators of disease.
>      * NASA's Planetary Data System (PDS) - NASA's planetary data
> archive, a repository and registry for all planetary data collected
> over the past 30+ years.
>      * various Earth Science data processing missions, including
> Seawinds/QuickSCAT, the Orbiting Carbon Observatory, the NPP Sounder
> PEATE project, and the Soil Moisture Active Passive (SMAP) mission.
> > From the OODT website:
> It's middleware for metadata:
>      * Transparent access to distributed resources
>      * Data discovery and query optimization
>      * Distributed processing and virtual archives
> It's a software architecture:
>      * Models for information representation
>      * Solutions to knowledge capture problems
>      * Unification of technology, data, and metadata
> Proposal
> OODT is an established open source project, with 9+ years of
> existence, and deployment at universities, federal research
> institutions, other NASA centers, and the NIH (it won runner-up NASA
> software of the year in 2003). It has a strong community of those that
> operate and support its growth. Our proposal is to bring OODT into
> Apache to strengthen its support and its capabilities even further on
> the laurels of Apache's brand and its growing huge community of
> developers from all over the world. In short, bringing OODT into
> Apache will significantly enhance OODT's widespread use, will likely
> improve its codebase, and furthermore will help Apache philosophy and
> community spread into OODT's already large community-base reaching
> across government, academia and industry.
> OODT will be, to the best of our knowledge, the first grid community
> project to bear the Apache brand. By grid technology, we mean a
> technology that provides the ability to create virtual organizations,
> as originally described by Kesselman and Foster in their seminal paper
> on grid computing. OODT provides both computational and data grid
> support, and is built with a component-philosophy. OODT includes
> components that allow for virtual information integration across
> organizations (provided by the Profile, Product and Query server
> components), and that allow for distributed data management and
> processing across heterogeneous virtual organizations (provided by the
> Catalog and Archive Service set of components, including File Manager,
> Workflow Manager and Resource Manager).
> Each set of components exist as independently organized Maven2
> projects, that reference each other (where appropriate), forming a
> layered set of components and a framework for grid computing.
> Background
> OODT is an established project within JPL and in use at several NASA
> centers, as well as univerities, and other government organizations
> and industrial collaborations. Chris Mattmann, a JPL employee, and ASF
> PMC (Lucene) and Committer (Nutch, Tika), has been working for the
> past 2 years on obtaining the necessary permission from JPL to release
> OODT into Apache. After initially being stalled, JPL has granted
> permission to allow OODT into Apache.
> Through his academic relationship with Justin Erekrantz, Apache
> President, and through their collective Ph.D. studies, OODT has been
> discussed between Chris and Justin on several occasions, and Justin
> offered to help champion OODT into the Apache Incubator when JPL was
> ready to release OODT. In December 2009, that permission was granted.
> This proposal is the result of the above efforts and related
> discussions. Some alternatives to incubation, like Apache Labs came up
> during the discussions but we believe that taking the project to the
> Incubator is the best way to start growing a viable Apache-based
> community to sustain OODT. Furthermore, given its larger code base and
> existing sub-projects, the goal would be for OODT to leverage the
> incubator to graduate into Apache's first top-level grid project,
> rather than graduate into a sub-project of an existing TLP.
> Rationale
> Grid computing has been around for the past 10 years and has gained
> widespread notoriety and attention in industry and academia.
> Scientific collaborations are increasingly virtual and require the
> capabilities (data and compute) of thousands of computers and
> resources that span organizations. There are a number of existing grid
> technologies (Globus being the most popular, DSpace, iRODS/Storage
> Resource Broker, see this paper for a full study), however Apache has
> no current grid technology under its umbrella and world reknown think
> tank. Morever, efforts are few and far between in terms of standing up
> Apache-based software that is applicable to the scientific community
> and grid community outside of use of fine-grained components in these
> systems. Other open source organizations (e.g., the Global
> Organization for Earth System Science Portals, GO-ESSP) have embraced
> the construction of such technology and there is a lot of work going
> on, e.g., at NOAA. This proposal aims to remedy this fact and to bring
> scientific data management/grid software into the Apache family and
> its worldwide community.
> OODT is a widely successful grid project with applicability and
> existing deployments across broad-reaching domains (planetary and
> earth sciences, cancer research/biomedicine, climate modeling and
> atmospheric science, etc.). The marriage of OODT and Apache will
> engender OODT's widespread, global use via the Apache brand, and will
> make Apache a player in the grid/scientific data community.
> Initial Goals
> The initial goals of the proposed project are:
>      * Stand up a sustaining Apache-based community around the OODT codebase.
>      * Active relationships and possible cooperation with related
> projects and communities.
>      * Refactor and bring up-to-date the OODT profile and product
> server components.
>      * Explore various underlying communication substrates. OODT
> currently uses REST (via its Web-Grid component).
>      * Create configuration-based OODT deployments. Currently the
> deployments are primarily code-based, or the configuration is strewn
> about the various sub-components. The goal would be to bring this
> configuration under a single umbrella project. The idea would be to
> create science data pipelines from configuration.
>      * Explore Python-based client and server implementations of OODT
> and implementations in other languages (Ruby).
> Current Status
> Meritocracy
> Many of the proposed initial committers are familiar with the
> meritocracy principles of Apache, and have already worked on the
> various source codebases (contributing via patches, emails, JIRA
> issues, and in Mattmann's case, as a Nutch, and Tika committer, and
> Lucene PMC member). We will follow the normal meritocracy rules also
> with other potential contributors.
> Community
> There is an existing, established community of developers and users of
> OODT within over 40 centers at NASA, NIH, DOE and academia, however
> there is no Apache OODT community as of yet. Our principal goal of
> this effort is to leverage the Apache Incubator to grow an Apache
> community base (in addition to OODT's existing community), and to
> build a self-sustaining community around this shared vision, and
> eventual Apache TLP status for OODT. With many sub projects (CAS,
> Product/Profile servers, Query Server, Web-grid, commons, etc.), OODT
> should attract a broad audience of developers with various interests.
> Core Developers
> The initial set of developers comes from NASA JPL, and with various
> backgrounds, with different but compatible needs for the proposed
> project. JPL is home to data management and grid projects spanning the
> domains of cancer research/bioinformatics, earth science, planetary
> science, astrophysics, and climate modeling.
> Alignment
> As Apache's first grid-based framework will likely be widely used by
> various open source, scientific and commercial projects both together
> with and independent of other Apache tools. With OODT's existing
> community we will also bring developers and organizations outside of
> Apache into the Apache ecosystem.
> Known Risks
> Orphaned products
> OODT has supported itself through successful deployments at NASA, at
> the U.S. National Institutes of Health (NIH), and recently at
> DOE-based laboratories and at academic centers. Further, OODT has been
> an active participant in IEEE/ACM-based conferences and
> meetings/journal publications over the past 9 years. There is active
> support on several existing NASA earth science missions, and the team
> at JPL is experienced and will continue to champion and develop OODT
> in the Apache area.
> Our goal is to take OODT from the early stage of Apache Incubation
> into a thriving Apache top-level project, and leverage it in the
> existing manner at NASA, the NIH, at DOE, and in academia and
> industry. Since OODT is a grid framework, it depends on many external
> services and projects, no one of which controls OODT's code-base.
> We feel that the time is ripe to bring OODT into Apache and to grow
> the community of developers who maintain OODT. We feel that Incubation
> will bring a slew of industry-based developers (and even those in
> academia, and government) who have no prior experience with OODT, but
> who could use OODT at their jobs and who are attracted to the brand
> name and community that Apache brings. We want to attract such
> developers to become part of the core OODT development team, and
> project management aspect.
> Inexperience with Open Source
> All the initial developers have worked on open source before and at
> least one (Mattmann) is a committer and PMC members in the Apache
> Lucene ecosystem. Sean Kelly is a well-respected Plone committer and
> has made several open source contributions over the years to FreeBSD
> and other software. Foster, McCleese and Woollard have all contributed
> to Apache projects by way of email, mailing lists, issue reporting and
> testing.
> Homogenous Developers
> The initial developers come from a variety of backgrounds and with a
> variety of needs for the proposed framework.
> Reliance on Salaried Developers
> All of the proposed initial developers are paid to work on this or
> related projects, but the proposed project is not the primary task for
> anyone.
> Relationships with Other Apache Products
> OODT is related to at least the following Apache projects. None of the
> projects is a direct competitor for OODT, but there are many cases of
> potential overlap in functionality.
>      * Apache Lucene - The family of Lucene products that implement
> search services are naturally of use in a grid environment such as
> OODT. In fact, OODT has integrated with many of these projects (Tika,
> SOLR and Lucene-java) already. We see OODT as a grid environment that
> makes use of search services.
>      * Apache UIMA - The UIMA project provides a framework and
> pluggable tools for analyzing text content and extracting information.
> Example tools include language identification, sentence boundary
> detection and "entity extraction" - finding references to people,
> places and organizations. OODT is related to UIMA in the sense that it
> is a framework to provide pluggable connections to content and
> information, but the focus of OODT is on scientific data sets, and
> additional on repositories and catalogs/registries that catalog
> information about those datasets and that store the physical bits.
> Further, OODT is a grid technology, meant to enable the creation of
> virtual organizations, which is not UIMA's focus.Finally, OODT
> contains both an information integration component, as well as a
> science data processing component, which UIMA does not.
> OODT is also related to Apache projects involving databases, such as
> the Apache DB project, however scientific data is not limited to
> traditional DBMS'es and involves both structured and un-structured
> information. However, there is likely much leveraging that can occur
> as OODT can be updated to remove Hibernate-like dependencies, and
> replace them with Derby-like dependencies.
> A Excessive Fascination with the Apache Brand
> All of us are familiar with Apache and have a respect for its brand
> and community. Though all of the proposed committers besides Mattmann
> have not participated in Apache projects as committers, and PMC
> members, many of them (McCleese, Foster, Woollard, Kelly) have
> contributed via issue comments, patches, and tests for Apache projects
> (including Maven, Tika, SOLR, and Lucene). Furthermore, some of the
> proposed committers (Kelly) are major contributors in other open
> source communities (e.g., Plone and Python). We feel that the Apache
> Software Foundation is a natural home for a project like this. OODT
> brings a credible, major grid-based software into the Apache
> community, and Apache brings a huge community of eager and world-class
> developers to help grow OODT's strengths and applicability across
> projects and domains.
> Documentation
> There is a wealth of documentation available on OODT. The best
> starting point is the existing OODT JPL website (which will be ported
> to be sync'ed or just a pointer to the Apache
> website)
>      * OODT website at JPL
>      * Mattmann's OODT paper that appeared at the 28th International
> Conference on Software Engineering in Shanghai, China.
>      * Crichton's seminal OODT paper appearing at the CODATA conference
> at the U.S. National Academies of Science in 2000.
>      * Google Scholar search on OODT.
> Standards and conventions related to OODT include the Dublin Core
> metadata set, ISO/IEC 11179, the HTTP 1.1 RFC, Grid-based standards
> including the Open Grid Services Architecture (OGSA), and standards
> for science data formats including Heirarchical Data Format (HDF),
> netCDF and OPeNDAP.
> Initial Source
> OODT will start with seed code donated by NASA JPL via Mattmann and
> the rest of the initial committers.
> Source and Intellectual Property Submission Plan
> All seed code and other contributions will be handled through the
> normal Apache contribution process. Mattmann has been authorized by
> NASA JPL to lead the contribution of OODT into the Incubator via his
> existing Apache CLA.
> We will also contact other related efforts for possible cooperation
> and contributions.
> External Dependencies
> OODT depends on a number of external connector libraries with various
> licensing conditions. An initial list of such dependencies (taken from
> one of the OODT sub-components, the CAS file manager) is shown below.
> Library | License
> commons-codec | AL v2
> commons-dbcp | AL v2
> commons-httpclient | AL v2
> commons-io | AL v2
> commons-pool | AL v2
> cas-metadata | (to be AL v2)
> edm-commons | (to be AL v2)
> hsqldb | LGPL v2.1
> jug-asl | AL v2
> lucene-core | AL v2
> xmlrpc | AL v2
> There are also some LGPL components that would be useful. Whether and
> how such dependencies could be handled will be discussed during
> incubation. No such dependencies will be added to the project before
> the legal implications have been cleared. Existing LGPL dependencies,
> such as hsqldb above for the CAS file manager, will be removed and a
> suitable ASL friendly alternative will be investigated and used to
> replace the LGPL dependencies.
> Cryptography
> OODT itself will not use cryptography, but it is possible that some of
> the external product or profile server or CAS libraries will include
> cryptographic code to handle features present in various science data
> formats. The current OODT code base relies on Apache Tika which
> contains an export control statement regarding cryptographic code per
> Apache policy. We will follow a similar approach with OODT. Mattmann
> led this effort in Apache Nutch and saw Jukka Zitting lead this effort
> in Apache Tika, so he is familiar with this process.
> Required Resources
> Mailing lists
>      *
>      *
>      *
> Subversion Directory
>      *
> Issue Tracking
>      * JIRA OODT (OODT)
> Other Resources
>      * OODT Wiki
> Initial Committers
> Name | Email | Affiliation | CLA
> Chris A. Mattmann | mattmann at apache dot org | NASA Jet Propulsion
> Laboratory | yes
> Daniel J. Crichton | crichton at jpl dot nasa dot gov | NASA Jet
> Propulsion Laboratory | no
> Paul Ramirez | pramirez at jpl dot nasa dot gov | NASA Jet Propulsion
> Laboratory | no
> Sean Kelly | kelly at jpl dot nasa dot gov | NASA Jet Propulsion Laboratory | no
> Sean Hardman | shardman at jpl dot nasa dot gov | NASA Jet Propulsion
> Laboratory | no
> Andrew F. Hart | ahart at jpl dot nasa dot gov | NASA Jet Propulsion
> Laboratory | no
> Joshua Garcia | joshua at jpl dot nasa dot gov | NASA Jet Propulsion
> Laboratory | no
> David Woollard | woollard at jpl dot nasa dot gov | NASA Jet
> Propulsion Laboratory | no
> Brian Foster | bfoster at jpl dot nasa dot gov | NASA Jet Propulsion
> Laboratory | no
> Sean McCleese | smcclees at jpl dot nasa dot gov | NASA Jet Propulsion
> Laboratory | no
> Sponsors
> Champion
>      * Justin Erenkrantz (jerenkrantz at apache dot org)
> Nominated Mentors
>      * Justin Erenkrantz (jerenkrantz at apache dot org)
> Sponsoring Entity
>      * Apache Incubator
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