+1 (binding) Regards, Arvind Prabhakar
On Sun, May 18, 2014 at 2:15 PM, Chris Aniszczyk <caniszc...@gmail.com>wrote: > Based on the results of the discussion thread: > > http://mail-archives.apache.org/mod_mbox/incubator-general/201405.mbox/%3CCAJg1wMRGhLu4P7LeVQB%2B5K0C-fr-pw2448uj%3D6-3zHag4F1EbA%40mail.gmail.com%3E > > I would like to call a vote on accepting Parquet into the incubator. > https://wiki.apache.org/incubator/ParquetProposal > > [ ] +1 Accept Parquet into the Incubator > [ ] +0 Indifferent to the acceptance of Parquet > [ ] -1 Do not accept Parquet because ... > > The vote will be open until Thursday May 22nd 18:00 UTC. > > = Parquet Proposal = > > == Abstract == > Parquet is a columnar storage format for Hadoop. > > == Proposal == > > We created Parquet to make the advantages of compressed, efficient columnar > data representation available to any project in the Hadoop ecosystem, > regardless of the choice of data processing framework, data model, or > programming language. > > == Background == > > Parquet is built from the ground up with complex nested data structures in > mind, and uses the repetition/definition level approach to encoding such > data structures, as popularized by Google Dremel ( > https://blog.twitter.com/2013/dremel-made-simple-with-parquet). We believe > this approach is superior to simple flattening of nested name spaces. > > Parquet is built to support very efficient compression and encoding > schemes. Parquet allows compression schemes to be specified on a per-column > level, and is future-proofed to allow adding more encodings as they are > invented and implemented. We separate the concepts of encoding and > compression, allowing parquet consumers to implement operators that work > directly on encoded data without paying decompression and decoding penalty > when possible. > > == Rationale == > > Parquet is built to be used by anyone. We believe that an efficient, > well-implemented columnar storage substrate should be useful to all > frameworks without the cost of extensive and difficult to set up > dependencies. > > Furthermore, the rapid growth of Parquet community is empowered by open > source. We believe the Apache foundation is a great fit as the long-term > home for Parquet, as it provides an established process for > community-driven development and decision making by consensus. This is > exactly the model we want for future Parquet development. > > == Initial Goals == > > * Move the existing codebase to Apache > * Integrate with the Apache development process > * Ensure all dependencies are compliant with Apache License version 2.0 > * Incremental development and releases per Apache guidelines > > == Current Status == > > Parquet has undergone 2 major releases: > https://github.com/Parquet/parquet-format/releases of the core format and > 22 releases: https://github.com/Parquet/parquet-mr/releases of the > supporting set of Java libraries. > > The Parquet source is currently hosted at GitHub, which will seed the > Apache git repository. > > === Meritocracy === > > We plan to invest in supporting a meritocracy. We will discuss the > requirements in an open forum. Several companies have already expressed > interest in this project, and we intend to invite additional developers to > participate. We will encourage and monitor community participation so that > privileges can be extended to those that contribute. > > === Community === > > There is a large need for an advanced columnar storage format for Hadoop. > Parquet is being used in production by many organizations (see > https://github.com/Parquet/parquet-mr/blob/master/PoweredBy.md) > > * Cloudera: https://twitter.com/HenryR/statuses/324222874011451392 > * Criteo: https://twitter.com/julsimon/statuses/312114074911666177 > * Salesforce: https://twitter.com/TwitterOSS/statuses/392734610116726784 > * Stripe: https://twitter.com/avibryant/statuses/391339949250715648 > * Twitter: https://twitter.com/J_/statuses/315844725611581441 > > By bringing Parquet into Apache, we believe that the community will grow > even bigger. > > === Core Developers === > > Parquet was initially developed as a collaboration between Twitter, > Cloudera and Criteo. > > See > > https://blog.twitter.com/2013/announcing-parquet-10-columnar-storage-for-hadoop > > === Alignment === > > We believe that having Parquet at Apache will help further the growth of > the big-data community, as it will encourage cooperation within the greater > ecosystem of projects spawned by Apache Hadoop. The alignment is also > beneficial to other Apache communities (such as Hadoop, Hive, Avro). > > == Known Risks == > > === Orphaned Products === > > The risk of the Parquet project being abandoned is minimal. There are many > organizations using Parquet in production, including Twitter, Cloudera, > Stripe, and Salesforce ( > http://blog.cloudera.com/blog/2013/10/parquet-at-salesforce-com/). > > === Inexperience with Open Source === > > Parquet has existed as a healthy open source for one year. During that > time, we have curated an open-source community successfully, attracting > over 40 contributors (see > https://github.com/Parquet/parquet-mr/graphs/contributors) from a diverse > group of companies. > Several of the core contributors to the project are deeply familiar with > OSS and Apache specifically: Julien Le Dem was until recently the PMC Chair > for Apache Pig, and Dmitriy Ryaboy, Aniket Mokashi, and Jonathan Coveney > are also Apache Pig committers with contributions to several other Apache > projects. Todd Lipcon and Tom White are committers to Apache Hadoop and > multiple other related projects. Brock Noland is a Hive committer. > > === Homogenous Developers === > > The initial committers come from a number of companies and countries. > Parquet has an active community of developers, and we are committed to > recruiting additional committers based on their contributions to the > project. The java library component alone has contributions from 31 > individual github accounts, 14 of which contributed over 1000 lines of > code. > > === Reliance on Salaried Developers === > > It is expected that Parquet development will occur on both salaried time > and on volunteer time, after hours. The majority of initial committers are > paid by their employers to contribute to this project. However, they are > all passionate about the project, and we are confident that the project > will continue even if no salaried developers contribute to the project. As > evidence of this statement, we present the GitHub punchcard (see > https://github.com/Parquet/parquet-mr/graphs/punch-card) showing that a > lot > of activity happens on weekends. We are committed to recruiting additional > committers including non-salaried developers. > > === Relationships with Other Apache Products === > > As mentioned in the Alignment section, Parquet is closely related to > Hadoop. It provides an API that allowed it to be easily integrated with > many other apache projects: Pig, Hive, Avro, Thrift, Spark, Drill, Crunch, > Tajo. Some of the features it provides are similar to the ORC file format > which is part of the Hive project. However Parquet focused on being > framework agnostic and language independent and has been really successful > to that end. On top of the Apache projects mentioned above, Parquet is also > integrated with other open source projects, including Protocol Buffers, > Cloudera Impala or Scrooge. We look forward to continue collaborating with > those communities, as well as other Apache communities. > > === An Excessive Fascination with the Apache Brand === > > Parquet is an already healthy and well known open source project. This > proposal is not for the purpose of generating publicity. Rather, the > primary benefits to joining Apache are those outlined in the Rationale > section. > > == Documentation == > > Documentation is currently located as README markdown files: > > * https://github.com/Parquet/parquet-format > * https://github.com/Parquet/parquet-mr > > == Source and Intellectual Property Submission Plan == > > The Parquet codebase is currently hosted on Github: > https://github.com/Parquet. > > These are the codebases that we would migrate to the Apache foundation. > > == External Dependencies == > > > * Junit: EPL > * Apache Commons: ALv2 > * Apache Thrift: ALv2 > * Apache Maven: ALv2 > * Apache Avro: ALv2 > * Apache Hadoop: ALv2 > * Google Guava: ALv2 > * Google Protobuf: New BSD License > > == Cryptography == > > We do not expect Parquet to be a controlled export item due to the use of > encryption. > > == Required Resources == > > === Mailing lists === > > * priv...@parquet.incubator.apache.org > * comm...@parquet.incubator.apache.org > * d...@parquet.incubator.apache.org > > == Subversion Directory == > > Git is the preferred source control system: > > * git://git.apache.org/parquet-format > * git://git.apache.org/parquet-mr > > == Issue Tracking == > > We'd like to keep using the Git review and issue tracking tools. > Controlling Pull requests closing through git commit messages in > git.apache.org > > == Initial Committers == > > * Aniket Mokashi <aniket...@gmail.com> > * Brock Noland <br...@apache.org> > * Chris Aniszczyk <caniszc...@gmail.com> > * Dmitriy Ryaboy <dvrya...@apache.org> > * Jake Farrell <jfarr...@apache.org> > * Jonathan Coveney <jcove...@gmail.com> > * Julien Le Dem <jul...@apache.org> > * Lukas Nalezenec <lukas.naleze...@gmail.com> > * Marcel Kornacker <mar...@cloudera.com> > * Mickael Lacour > * Nong Li <n...@cloudera.com> > * Remy Pecqueur > * Ryan Blue <b...@cloudera.com> > * Tianshuo Deng <dengtians...@gmail.com> > * Tom White <tomwh...@apache.org> > * Wesley Peck > > == Affiliations == > > * Aniket Mokashi - Twitter > * Brock Noland - Cloudera > * Chris Aniszczyk - Twitter > * Dmitriy Ryaboy - Twitter > * Jake Farrell > * Jonathan Coveney - Twitter > * Julien Le Dem - Twitter > * Lukas Nalezenec > * Marcel Kornacker - Cloudera > * Mickael Lacour - Criteo > * Nong Li - Cloudera > * Remy Pecqueur - Criteo > * Ryan Blue - Cloudera > * Tianshuo Deng - Twitter > * Tom White - Cloudera > * Wesley Peck - ARRIS, Inc. > > == Sponsors == > > === Champion === > > * Todd Lipcon > > === Nominated Mentors === > > * Tom White > * Chris Mattmann > * Jake Farrell > * Roman Shaposhnik > > === Sponsoring Entity === > > The Apache Incubator > > -- > Cheers, > > Chris Aniszczyk > http://aniszczyk.org > +1 512 961 6719 >
