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From Craig L Russell <craig.russ...@oracle.com>
Subject Re: [VOTE] Accept Gora into the Apache Incubator
Date Wed, 22 Sep 2010 16:28:33 GMT
+1

Craig

On Sep 19, 2010, at 8:21 PM, Mattmann, Chris A (388J) wrote:

> Hi Folks,
>
> Over the past week or so we've been discussing the Gora project and  
> bringing
> it into the Apache Incubator [1]. It's time to call a VOTE thread on  
> the
> issue. Please VOTE below:
>
> [ ] +1 Accept Gora into the Apache Incubator.
> [ ] +0 Don't care.
> [ ] -1 Don't accept Gora into the Apache Incubator because...
>
> I'll leave the VOTE open for the remainder of the week (ending on  
> 9/24).
> Here's my +1 (IPMC binding).
>
> [1] http://s.apache.org/MPw
>
> Cheers,
> Chris
>
> P.S. The wiki text for the proposal is pasted below.
>
> ----------
> Gora Proposal for Apache Incubation
>
> Abstract
> Gora is an ORM framework for column stores such as Apache HBase and  
> Apache
> Cassandra with a specific focus on Hadoop.
>
> Proposal
> Although there are various excellent ORM frameworks for relational
> databases, data modeling in NoSQL data stores differ profoundly from  
> their
> relational cousins. Moreover, data-model agnostic frameworks such as  
> JDO are
> not sufficient for use cases, where one needs to use the full power  
> of the
> data models in column stores. Gora fills this gap by giving the user  
> an
> easy-to-use ORM framework with data store specific mappings and  
> built in
> Apache Hadoop support.
>
> The overall goal for Gora is to become the standard data  
> representation and
> persistence framework for big data. The roadmap of Gora can be  
> grouped as
> follows.
> * Data Persistence : Persisting objects to Column stores such as  
> HBase,
> Cassandra, Hypertable; key-value stores such as Voldermort, Redis,  
> etc; SQL
> databases, such as MySQL, HSQLDB, flat files in local file system of  
> Hadoop
> HDFS.
> * Data Access : An easy to use Java-friendly common API for  
> accessing the
> data regardless of its location.
> * Indexing : Persisting objects to Lucene and Solr indexes,
> accessing/querying the data with Gora API.
> * Analysis : Accesing the data and making analysis through adapters  
> for
> Apache Pig, Apache Hive and Cascading
> * MapReduce <http://wiki.apache.org/incubator/MapReduce>  support :
> Out-of-the-box and extensive MapReduce
> <http://wiki.apache.org/incubator/MapReduce>  (Apache Hadoop)  
> support for
> data in the data store.
>
> Background
> ORM stands for Object Relation Mapping. It is a technology which  
> abstacts
> the persistency layer (mostly Relational Databases) so that plain  
> domain
> level objects can be used, without the cumbersome effort to save/ 
> load the
> data to and from the database. Gora differs from current solutions  
> in that:
> * Gora is specially focussed at NoSQL data stores, but also has  
> limited
> support for SQL databases
> * The main use case for Gora is to access/analyze big data using  
> Hadoop.
> * Gora uses Avro for bean definition, not byte code enhancement or
> annotations
> * Object-to-data store mappings are backend specific, so that full  
> data
> model can be utilized.
> * Gora is simple since it ignores complex SQL mappings
> * Gora will support persistence, indexing and anaysis of data, using  
> Pig,
> Lucene, Hive, etc
> Rationale
> ORM frameworks are nothing new. But with the explosion of data  
> generated in
> Terabytes and even Petabytes, NoSQL data stores are gaining ever- 
> increasing
> popularity. Coupled with limited support to already-proven Apache  
> Hadoop
> support in current ORM frameworks, there was a need for a new project.
>
> Gora is currently hosted at Github. However, Gora has ties to ASF in  
> many
> ways. As detailed in the proposal section, Gora will be a high level  
> client
> for many Apache projects and subprojects including Hadoop(common,  
> hdfs, and
> mapreduce), HBase, Cassandra, Avro, Lucene, Solr, Pig, and Hive. Gora
> already uses Hadoop, HBase, Cassandra and Avro. Moreover, Gora  
> started its
> life inside Apache Nutch project, and now Nutch trunk uses Gora as a
> library. Even more, the initial set of committers are all ASF members.
> Therefore, we think that Apache will be an excellent home for Gora.
>
> Initial Goals
> Initial goals for Gora can be summarized as:
> * Iron out the remaining issues with HBase, Cassandra and SQL support.
> * Make the first release before the end of the year.
> * Improve documentation
> * Support for Cascading
> Current Status
> Meritocracy
> Current commit rights belong to the initial list of committers four  
> of who
> are also ASF members. All the developers have extensive experience  
> with
> Apache projects. We honor the meritocracy policy of ASF foundation.
>
> Community
> Gora’s community mostly overlap with that of Nutch, Hadoop, HBase,  
> Avro and
> Cassandra. We  have a small community for now (5 initial committers,  
> 18
> people tracking the project at Github), but have been piggybacking  
> the Nutch
> community for a while. If Gora is accepted to Apache Incubator, we  
> expect
> more traction. Moreover, with the increasing popularity of NoSQL  
> databases,
> we expect more users.
>
> Core Developers
> Gora was started by the initial code base inside Apache Nutch by  
> Doğacan
> Güney. Then Enis Söztutar has refactored and re-architected the  
> project out
> of Nutch. Later Julien Nioche, Andrzej Bialecki and Doğacan has  
> ported Nutch
> to use the newly formed project. Later, Sertan Alkan has joined.  
> Doğacan and
> Julien are Nutch PMC members, Andrzej is the Nutch PMC chair. Enis  
> is an
> Apache Hadoop PMC member.
>
> Alignment
> As discusssed in the second paragraph of Rationale Section, all of the
> current developers are Apache people, and four of them are PMC  
> members,
> which shows that we have some experience with the Apache way.  
> Moreover, Gora
> is tightly related with lots of Apache projects, Nutch, Hadoop, HBase,
> Cassandra, Avro, Pig, Hive, Lucene to name a few. Gora has started  
> its life
> inside Nutch, and now nutch trunk uses Gora to persist web crawl  
> data to
> HBase, Cassandra and MySQL, which means that Gora is a very critical
> component in Nutch.
>
> Known Risks
> Orphaned Products
> Most of the development depends on Enis and Doğacan for now. Both of  
> them
> intent to continue Gora development. However, we also acknowledge  
> that more
> core developers are needed for the project to be truly successful. The
> general strategy to acquire more developers will be to acquire more  
> users,
> and encourage users to be active in the community and develop patches.
> Moreover, the next release of Nutch planned before the end of 2010 has
> extensive Gora support. We expect more interest from Nutch  
> community, and we
> will continue to announce Gora notifications at Hadoop,HBase and  
> Cassandra
> mailing lists.
>
> Inexperience with Open Source
> We believe that all of the developers have extensive open source  
> experience.
> Four of the initial committers are apache members. The codebase is  
> also open
> source since April 2010. We also have some documentation, wiki  
> pages, issue
> tracker and dev mailing list.
>
> Homogeneous Developers
> We have a semi-distributed development environment where Doğacan,  
> Enis and
> Sertan share the same office, but Andrzej and Julien are  
> independent. With
> the aim of acquiring more developers, we expect more heterogeneous
> development.
>
> Reliance on Salaried Developers
> Gora development have been supported by ant.com
> <http://wiki.apache.org/incubator/ant.com>  search engine as  
> contract work.
> It is expected that this contract will continue in the future.  
> However, even
> without sponsors, we are commited to continue on Gora development,  
> since we
> believe in the technology it brings and it’s vital role in Nutch,  
> and our
> other closed sourced projects.
>
> Relationships with Other Apache Products
> Gora will be tightly related to lots of Apache projects:
> *
> * Nutch : Apache nutch was to home to Gora’s initial code base.  
> Now, Nutch
> trunk uses Gora as a library. The next relase of Nutch, planned  
> before the
> end of 2010 will be using Gora’s first release.
> *
> * Hadoop : Gora has extensive support for Hadoop MapReduce
> <http://wiki.apache.org/incubator/MapReduce>  Gora defines all the  
> necessary
> data structures for working with Hadoop .Data stored in column  
> oriented data
> stores can be analyzed  with Gora using Hadoop.
> *
> * Avro : Gora uses and extends Avro. Data beans in Gora are defined  
> using
> Avro schemas ,and compiled into Java code with the extended version  
> of the
> Avro compiler. Avro is also used in data serialization.
> *
> * HBase : Gora supports HBase as a persistency backend.
> *
> * Cassandra : Gora support Cassandra as a persistency backend.
> *
> * Lucene/Solr : Gora intends to support Lucene/Solr as a persistency  
> and
> indexing backend.
> *
> * Pig : Gora intends to support Pig for data anaysis
> *
> * Hive :  Gora intends to support Hive for data analysis
>
> An Excessive Fascination with the Apache Brand
> Gora is a natural fit for Apache due to it's current commiters and  
> depending
> projects.
>
> Documentation
> * The project is currently hosted at http://github.com/enis/gora/.
> *
> * Wiki pages can be found at http://wiki.github.com/enis/gora/.
> *
> * List of issues can be found at  http://github.com/enis/gora/issues/.
> *
> * Current web address: http://groups.google.com/group/gora-dev.
> *
> * Current email address: gora-dev@googlegroups.com.
>
> Initial Source
> The initial source was developed as a patch to the Apache Nutch  
> project. But
> the storage abstraction layer was orthogonal to the web crawler, and  
> we
> decided to extract it to a separate project with much wider goals.  
> Thus
> Gora, as a project, was born. The initial code is developed by Enis  
> and
> Dogacan with ant.com’s sponsorship.
>
> The code can be found at http://github.com/enis/gora/.
>
> External Dependencies
> External dependencies excluding Apache projects are as follows
> *
> * JDOM - http://jdom.org/ -  Apache-style license
> *
> * SQL Builder - http://openhms.sourceforge.net/sqlbuilder/ - Artistic
> License, LGPL. SQL Builder is intended to be removed from the source  
> due to
> technical reasons anyway.
> *
> * HSQLDB - http://hsqldb.org/ - BSD-style license
> *
> * JUnit - http://junit.org - Common Public License 1.0
> *
> * SLF4J - http://www.slf4j.org/ - MIT License
> *
> * Google Guava Libraries - http://code.google.com/p/guava-libraries/ -
> Apache License 2.0
>
> Required Resources
> Mailing Lists
> * gora-private (with moderated subscriptions)
> * gora-dev
> * gora-commits
> Subversion Directory
> * http://svn.apache.org/repos/asf/incubator/gora
>
> Issue Tracking
> * JIRA (GORA)
> Other Resources
> We need a wiki at http://wiki.apache.org. Currently, we have a wiki at
> Github, Since there is not a lot of pages there, we can manually  
> move the
> pages to the wiki at wiki.apache.org.
>
> Initial Committers
> *    Name         email                  Affiliation   Timezone
> *    Enis Söztutar      enis [at] apache.org          
> Konneka             +3
> *    Doğacan Güney      dogacan [at] apache.org       
> Konneka             +3
> *    Sertan Alkan       sertanalkan [at] gmail.com    
> Konneka             +3
> *    Julien Nioche      jnioche [at] apache.org      DigitalPebble
> <http://wiki.apache.org/incubator/DigitalPebble>        +1
> *    Andrzej Bialecki   ab [at] apache.org           Sigram
> *    Andrew Hart        ahart [at] apache.org        NASA  
> JPL            -8
> *    Dave Woollard      woollard [at] apache.org     NASA  
> JPL            -8
> *    Henry Saputra      hsaputra [at] apache.org      
> Yahoo!              -8
>
> Affiliations
> All of the parties are affiliated with companies and organizations  
> that are
> familiar with the development of open source . Most of the original  
> Gora
> development was sponsored by ant.com, however we expect that the  
> amount of
> volunteer work will increase, and more developers will come on board.
>
> Sponsors
> Champion
> * Chris Mattmann (mattmann AT apache DOT org)
> Nominated Mentors
> * Chris Mattmann (mattmann AT apache DOT org)
> * Andrzej Bialecki (ab AT apache DOT org )
> * Tom White (tomwhite AT apache DOT org)
> Sponsoring Entity
> Apache Incubator. Successful graduation can result in either being a  
> TLP,
> or a subproject of  Hadoop, since most of the community is projected  
> to
> overlap.
>
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Chris Mattmann, Ph.D.
> Senior Computer Scientist
> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
> Office: 171-266B, Mailstop: 171-246
> Email: Chris.Mattmann@jpl.nasa.gov
> WWW:   http://sunset.usc.edu/~mattmann/
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Adjunct Assistant Professor, Computer Science Department
> University of Southern California, Los Angeles, CA 90089 USA
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
>

Craig L Russell
Architect, Oracle
http://db.apache.org/jdo
408 276-5638 mailto:Craig.Russell@oracle.com
P.S. A good JDO? O, Gasp!


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