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From Julien Le Dem <jul...@dremio.com>
Subject Re: [VOTE] Accept S2Graph into Apache Incubation
Date Tue, 24 Nov 2015 17:55:29 GMT
+1 (binding)

On Tue, Nov 24, 2015 at 9:48 AM, Stack <stack@duboce.net> wrote:

> +1 (binding)
>
> On Mon, Nov 23, 2015 at 4:53 PM, Hyunsik Choi <hyunsik@apache.org> wrote:
>
> > Hello folks,
> >
> > Thanks for all the feedback on the S2Graph Proposal.
> >
> > I would like to call for a [VOTE] on S2Graph joining the ASF as an
> > incubation project.
> >
> > The vote is open for at least 72 hours:
> >
> > [ ] +1 accept S2Graph in the Incubator
> > [ ] ±0
> > [ ] -1 (please give reason)
> >
> > S2Graph provides a scalable distributed graph database engine over a
> > key/value store such as HBase. S2Graph provides a fully asynchronous
> > API to manipulate data as a property graph model and fast
> > breadth-first-search queries over the graph. S2Graph is designed for
> > OLTP-like workloads on graph data sets instead of batch processing,
> > and it also provides INSERT/UPDATE operations on them.
> >
> > The proposal is available on the wiki here:
> > https://wiki.apache.org/incubator/S2GraphProposal
> >
> > Best regards,
> > Hyunsik
> >
> >
> > <COPY of the proposal wiki>
> >
> >
> ------------------------------------------------------------------------------------------------
> > = S2Graph Proposal =
> >
> > == Abstract ==
> > S2Graph is a distributed and scalable OLTP graph database built on
> > Apache HBase to support fast traversal of extremely large graphs.
> >
> > == Proposal ==
> > S2Graph provides a scalable distributed graph database engine over a
> > key/value store such as HBase. S2Graph provides a fully asynchronous
> > API to manipulate data as a property graph model and fast
> > breadth-first-search queries over the graph. S2Graph is designed for
> > OLTP-like workloads on graph data sets instead of batch processing.
> > Also, S2Graph provides INSERT/UPDATE operations. Its name 'S2Graph' is
> > an abbreviated word of '''S'''uper '''S'''imple '''Graph''' Database.
> >
> > Here are additional materials to introduce S2Graph.
> >  * HBaseCon 2015 -
> http://www.slideshare.net/HBaseCon/use-cases-session-5
> >  * Apache: Big Data 2015 -
> > http://schd.ws/hosted_files/apachebigdata2015/06/s2graph_apache_con.pdf
> >
> > == Background ==
> > S2Graph initially started as an internal project at Kakao.com to
> > efficiently store user relations and user activities as one large
> > graph and to provide a unified query interface to traverse the graph.
> > It was open sourced on Github about a 3 months ago in June 2015.
> >
> > Over time, S2Graph using HBase as the storage tier has begun by
> > adapted into various applications, such as messaging, social feeds,
> > and realtime recommendations at Kakao.
> >
> > Users can benefit by using S2Graph`s generalized high level graph
> > abstraction API instead of querying via low-level key/value APIs, just
> > as Apache Phoenix provides a SQL layer over HBase.
> >
> > == Rationale ==
> > Graph data (highly interconnected data) is very abundant and important
> > these days. When users have a multitude of relationships, each with
> > complex properties associated with them, a graph model is more
> > intuitive and efficient than tabular formats (RDBMS).
> >
> > There are many ASF projects that provide SQL tiers, but there is no
> > ASF projects that provide a scalable graph layer on top of the
> > existing hadoop ecosystem. When graph data grows to the trillion edge
> > scale, the process of traversing takes a long time and can be costly.
> > However, with the benefit of HBase`s scalable architecture, S2Graph
> > can traverse large graphs in a breadth-first-search manner
> > efficiently.
> >
> > S2Graph also interoperates with several existing Apache projects
> > (HBase, Apache Spark) to provide means of merging real time events and
> > batch processed data using the property graph data model.
> >
> > Many developers run their own domain specific API servers to serve
> > their data products, but a graph model is general and the S2Graph API
> > fully supports traversal of the graph, so it can be used as a scalable
> > general purpose API serving layer for various domains. As long as data
> > can be modeled as graph, then users can avoid tedious work developing
> > customized API servers if they use S2Graph.
> >
> > == Initial Goals ==
> > The initial goals will be to move the existing codebase to Apache and
> > integrate with the Apache development process. Once this is
> > accomplished, we plan for incremental development and releases that
> > follow the Apache guidelines.
> >
> > == Current Status ==
> >
> > === Meritocracy ===
> > S2Graph operated on meritocratic principles from the get go.
> > Currently, all the discussions pertaining to S2Graph development are
> > public on Github. The current incubation proposal includes the major
> > code contributors to S2Graph. Several additional people have worked on
> > the S2graph codebase for industry use cases and would be interested in
> > becoming committers. We are starting with a small committer group and
> > we plan to add additional committers following an open merit-based
> > decision process during the incubation phase.
> >
> > === Community ===
> > We have already begun building a community but at this time the
> > community consists only of S2Graph developers – all Kakao employees –
> > and prospective users. S2Graph seeks to develop developer and user
> > communities during incubation.
> >
> > === Core Developers ===
> > S2Graph is currently being designed and developed by 2 engineers from
> > Kakao. - Doyung Yoon, Deawon Jeong.
> >
> > === Alignment ===
> > Our proposed S2Graph effort aligns closely with Apache HBase. The
> > HBase project perimeter is denoted by a simple byte-array based
> > Create, Read, Update, Delete and Scan API with no current plans to
> > extend beyond these bounds.
> >
> > S2Graph complements this with a higher level API for a property graph
> > model.
> >
> > S2Graph was designed to offer a scalable distributed graph database
> > skin over HBase from the beginning in order to provide a property
> > graph model and breadth first search, and will continue to focus on
> > providing the graph model.
> >
> > == Known Risks ==
> > === Orphaned Products ===
> > The core developers of S2Graph team plan to work full time on this
> > project. There is very little risk of S2Graph getting orphaned since
> > at least one large company (Kakao) is extensively using it in their
> > production HBase clusters. For example, currently there are 20+ use
> > cases with more than 1+Trillion edges and 140 million breadth first
> > search query requests per minute using S2Graph in production. We plan
> > to extend and diversify this community further through Apache.
> >
> > === Inexperience with Open Source ===
> > The core developers are all active users and followers of open source.
> > They are already committers and contributors to the S2Graph Github
> > project. All have been involved with the source code that has been
> > released under an open source license. Though the core set of
> > Developers do not have Apache Open Source experience, there are plans
> > to onboard individuals with Apache open source experience to the
> > project.
> >
> > === Homogenous Developers ===
> > Most committers in this proposal belong to the same institution
> > (Kakao). The engagement of these committers goes well beyond the
> > necessary development to support research, and all committers work on
> > S2Graph full time. Several people from other institutions are working
> > on and are familiar with the S2Graph codebase. We will work to attract
> > them as future committers during the incubation phase, following a
> > merit-based approach.
> >
> > === Reliance on Salaried Developers ===
> > Kakao invested in S2Graph as the distributed graph database solution
> > on top of HBase and some of its key engineers are working full time on
> > the project. We look forward to other Apache developers and
> > researchers contributing to the project. Also key to addressing the
> > risk associated with relying on Salaried developers from a single
> > entity is to increase the diversity of the contributors and actively
> > lobby for Domain experts in the graph database space to contribute.
> > Apache S2Graph intends to do this.
> >
> > === Relationships with Other Apache Products ===
> > S2Graph has a strong relationship and dependency with Apache HBase and
> > Apache Spark. Being part of Apache’s Incubation community, could help
> > with a closer collaboration among these two projects and as well as
> > others.
> >
> > In terms of graph processing frameworks, S2Graph and Apache Giraph
> > look similar. However, their goals are apparently different to each
> > other. Giraph aims at analytical batch processing on immutable graph
> > data sets. In contrast, S2Graph is designed for OLTP-like workloads on
> > graph data sets, and S2Graph provides INSERT/UPDATE operations too.
> >
> >
> > === An Excessive Fascination with the Apache Brand ===
> > S2Graph is proposing to enter incubation at Apache in order to help
> > efforts to diversify the committer-base, not so much to capitalize on
> > the Apache brand. The S2Graph project is in production use already
> > inside Kakao, but is not expected to be a Kakao product for external
> > customers. As such, the S2Graph project is not seeking to use the
> > Apache brand as a marketing tool.
> >
> > == Documentation ==
> > Information about S2Graph can be found at
> > https://github.com/kakao/s2graph. The following links provide more
> > information about S2Graph in open source:
> >  * S2Graph web site: https://steamshon.gitbooks.io/s2graph-book/content/
> >  * Codebase at Github: https://github.com/kakao/s2graph
> >  * Issue Tracking: https://github.com/kakao/s2graph/issues
> >  * User community: https://groups.google.com/forum/#!forum/s2graph
> >
> > == Initial Source ==
> >
> > The S2Graph codebase is currently hosted on Github:
> > https://github.com/kakao/s2graph.
> >
> > === Source and Intellectual Property Submission Plan ===
> >
> > Currently, the S2Graph codebase is distributed under the Apache 2.0
> > License.
> >
> > == External Dependencies ==
> >
> > Beyond relying on Apache HBase, S2Graph has the following external
> > dependencies:
> >  * Asynchbase (BSD)
> >  * Play Framework (Apache 2.0 license)
> >  * Scala (http://www.scala-lang.org/license.html)
> >  * Spark (Apache 2.0 license)
> >  * Kafka (Apache 2.0 license)
> >
> > == Required Resources ==
> >
> > === Mailing list ===
> >
> > We will migrate our mailing lists to the following:
> >  * users@s2graph.incubator.apache.org
> >  * dev@s2graph.incubator.apache.org
> >  * private@s2graph.incubator.apache.org
> >  * commits@s2graph.incubator.apache.org
> >
> > === Source control ===
> >
> > The S2Graph team would like to use Git for source code control, due to
> > our current use of Git. We request a writeable Git repo for S2Graph,
> > and mirroring to be set up to Github through INFRA.
> >
> > === Issue Tracking ===
> >
> > S2Graph currently uses the github issue tracking system associated
> > with its github repo (https://github.com/kakao/s2graph/issues). We
> > will migrate to the Apache JIRA
> > (http://issues.apache.org/jira/browse/S2Graph).
> >
> > === Other Resources ===
> >
> >  * Jenkins/Hudson for builds and test running.
> >  * Wiki for documentation purposes.
> >  * Blog to improve project dissemination.
> >
> > == Initial Committers ==
> >
> >  * Doyung Yoon <shom83 at gmail dot com>
> >  * Daewon Jeong <blueiur at gmail dot com>
> >  * Jaesang Kim <honeysleep at gmail dot com>
> >  * Hwansung Yu <deejayfwan at gmail dot com>
> >  * Min-Seok Kim <mskim.org at gmail dot com>
> >  * Chul Kang <miralchul at gmail dot com>
> >  * Luke Han <lukehan at apache dot org>
> >  * Alexander Bezzubov <bzz at apache dot org>
> >
> > == Affiliations ==
> >
> >  * Doyung Yoon, Kakao
> >  * Daewon Jeong, Kakao
> >  * Jaesang Kim, Kakao
> >  * Hwansung Yu, Kakao
> >  * Min-Seok Kim, Kakao
> >  * Chul Kang, Kakao,
> >  * Luke Han, Ebay Inc.
> >  * Alexander Bezzubov, NFLabs
> >
> > == Sponsors ==
> >
> > === Champion ===
> > Hyunsik Choi
> >
> > === Nominated Mentors ===
> >  * Andrew Purtell - Apache Member, Salesforce
> >  * Sergio Fernández - Apache Member, Redlink
> >  * Hyunsik Choi - Apache Member, Gruter Inc.
> >  * Seetharam Venkatesh - IPMC, Hortonworks Inc.
> >
> > === Sponsoring Entity ===
> >
> >  * The Apache Incubator
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > For additional commands, e-mail: general-help@incubator.apache.org
> >
> >
>



-- 
Julien

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