+1 non-binding On 2015년 11월 24일 (화) at 오전 11:55 hongbin ma <mahong...@apache.org> wrote:
> +1 non-binding > > On Tue, Nov 24, 2015 at 10:54 AM, Luke Han <luke...@gmail.com> wrote: > > > +1 non-binding > > > > > > Best Regards! > > --------------------- > > > > Luke Han > > > > On Tue, Nov 24, 2015 at 8:53 AM, Hyunsik Choi <hyun...@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: > > > * us...@s2graph.incubator.apache.org > > > * d...@s2graph.incubator.apache.org > > > * priv...@s2graph.incubator.apache.org > > > * comm...@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-unsubscr...@incubator.apache.org > > > For additional commands, e-mail: general-h...@incubator.apache.org > > > > > > > > > > > > -- > Regards, > > *Bin Mahone | 马洪宾* > Apache Kylin: http://kylin.io > Github: https://github.com/binmahone >
